Faculty Profiles

Khadka, M., Arigbabowo, O. K., Tate, J. S., & Geerts, W. J. (2026). Evaluation of Mechanical Properties of Nylon 12/Strontium Ferrite Composite Fabricated via Magnetic Field-Assisted Additive Manufacturing (MFAAM). Materials Science & Engineering B, 323. https://doi.org/10.1016/j.mseb.2025.118860

Santos, A. A. G., Martins, N. R., Scolfaro, L. M., Geerts, W. J., & Borges, P. D. (2025). Iodine vacancy and Acetate substitution on α-FaPbI(3-x)Acy perovskite. Journal of Physics and Chemistry of Solids, 211, 113451. https://doi.org/https://doi.org/10.1016/j.jpcs.2025.113451

Arigbabowo, O. K., Tate, J. S., Khadka, M., Geerts, W. J., & Karkhanis, P. U. (2025). Review on mechanical, thermal, and magnetic performance of high-temperature thermoplastic bonded magnetic composites. Journal of Magnetism and Magnetic Materials. https://doi.org/https://doi.org/10.1016/j.jmmm.2025.173394

Mahamudujjaman, Md. R., Pyakurel, S., & Geerts, W. J. (2025). Stability Investigations of Triple Hallide Perovskite: A Detailed Study Using Angle Resolved XPS”, MRS Advances, August 19 2025. In MRS Advances (Vol. 10, pp. 2236–2244). Springer Nature. https://doi.org/https://doi.org/10.1557/s43580-025-01381-x

Belduque Correa, M. C., Tate, J. S., Ahmed, T. N., Arigbabowo, O. K., Sheley, R. R., Geerts, W. J., & Luna, D. (2025). Development of Strontium Ferrite/Polyamide 12 and Neodymium Iron Boron/Polyamide 12 Composites for Magnetic Devices using Additive Manufacturing. Journal of Nanoscience, NanoEngineering & Applications, 15(02). https://doi.org/https://doi.org/10.37591/JoNSNEA.v15i02.211398

Islam, M. A., & Geerts, W. J. (2025). Magnetic Field Induced Thermal Behavior and Sedimentation of Strontium Ferrite-PDMS Composites for Actuator Applications. In AIP Advances. AIOP.

Karkhanis, P. U., Tate, J. S., Arigbabowo, O. K., & Geerts, W. J. (2024). High Temperature 3D Printing of Polyamide Magnetic Composites. Austin, TX, USA: Solid Freeform Fabrication 2024. https://doi.org/https://doi.org/10.26153/tsw/58054

Arigbabowo, O. K., Tate, J. S., & Geerts, W. J. (2024). High-performance Thermoplastic-based Magnetic Composites. SAMPE Journal, 3(60), 8–18. https://doi.org/10.33599/SJ.v60no3.01

Poudel, K., Tate, J. S., Karkhanis, P. U., Arigbabowo, O. K., & Geerts, W. J. (2024). Optimal Silane Concentration for Strengthening PA12 and SFO Composite Filaments in FDM Printing: Preliminary Insights (pp. 133–145). Austin, TX, USA: Solid Freeform Fabrication 2024. https://doi.org/https://doi.org/10.26153/tsw/58057

Karkhanis, P. U., Tate, J. S., Arigbabowo, O. K., Geerts, W. J., Gonzalez, A. J., Inamdar, S., … Herrera, A. (2024). Magnetic Properties Evaluation Of Polyamide 4.6 Bonded Magnetic Composite. Diamond Bar, CA: Society for the Advancement of Material and Process Engineering – North America. https://doi.org/https://doi.org/10.33599/nasampe/s.24.0224

Arigbabowo, O. K., Tate, J. S., Hasan, M., Asadollahnejad, A., Islam, M. S., Price, H., & Geerts, W. J. (2024). Effect of Ball Milling on The Magnetic Performance Of Strontium Ferrite (Srfe12o19) Powder. Diamond Bar, CA, USA: Society for the Advancement of Material and Process Engineering – North America. https://doi.org/https://doi.org/10.33599/nasampe/s.24.0225

Howlader, C., Chen, Y., & Geerts, W. J. (2024). Antisolvent free depostion of lead-tin-based MAPbSn1-x(I0.75Br0.25)3 perovskite with a wide range of bandgap variation. MRS Communications.

Zakhidov, D., Zakhidov, A., Malliaras, G., Salleo, A., Geerts, W. J., & Slinker, J. (2024). Organic and perovskite materials and devices. MRS Communiucations (2nd ed., Vol. 14, p. 131). MRS. https://doi.org/https://doi.org/10.1557/s43579-024-00546-3

Khakurel, N. J., Amyx, D., Miyahara, Y., Chen, Y., & Geerts, W. J. (2024). Slot-die Coating of Famamidinium-Cesium mixed Halide Perovskites in Ambient conditions with FAAc additive. MRS Communications, 14, 215–221.

Espinoza Rodriguez, G., Arigbabowo, O., Alvarado, J., Tate, J. S., & Geerts, W. J. (2024). Wire Axis c-axis distribution of strontium-ferrite/PA-12 Extruded Filament. In AIP Advances (Vol. 14, p. 025245). AIP. https://doi.org/https://doi.org/10.1063/9.0000701

Khadka, M., Arigbabowo, O., Tate, J. S., & Geerts, W. J. (2024). The Magnetic Anisotropy of Field-Assisted 3D printed Nylon Strontium Ferrite composites. In AIP Advances (Vol. 14, p. 025022). AIP. https://doi.org/https://doi.org/10.1063/9.0000791

Rodriguez, L., Sapkota, A., Alvarado, J., Tate, J. S., & Geerts, W. J. (2024). Computational Modelling of a Triaxial Vibration Sample Magnetometer. In AIP Advances (Vol. 14, p. 025306). AIP. https://doi.org/https://doi.org/10.1063/9.0000787

Sapkota, A., Rodriguez, L., D.C., B., Dieckow, K., Howlader, C. Q., Geerts, W. J., & Tate, J. S. (2024). On the Origin of systematic errors in VSM torque curves. In AIP Advances (Vol. 14, p. 015048).

Cantrell, S. R., Welch, E., Scolfaro, L., & Geerts, W. J. (2023). Opto-electronic properties of carbon doped NiO. J. Phys. and Chem. Solids, 174, 111110. https://doi.org/j.jpcs.2022.111110

Kimmel, S. W., Koehne, B. D., Gibson, B., Geerts, W. J., Theodoropoulou, N., & Rhodes, C. P. (2023). Structure and Magnetism of Iron-Substituted Nickel Hydroxide Nanosheets. Magnetochemistry, 9, 25. https://doi.org/https://doi.org/10.3390/magnetochemistry9010025

Arigbabowo, O. K., Tate, J. S., & Geerts, W. J. (2023). High Performance Thermoplastic Based Magnetic Composites (Vol. 25, pp. 1713–1729). Diamond Bar, CA, USA: Society for the Advancement of Material and Process Engineering- North America. https://doi.org/https://doi.org/10.33599/nasampe/s.23.0279

Howlader, C. Q., Geerts, W. J., & Chen, Y. (2023). Selection of hole transport layer for Pb-Sn binary perovskite solar cells. In Organic, Hybrid, and Perovskite Photovoltaics XXIII (Vol. 12659, pp. 1265908-1-1265908–1265909). SPIE.

Halim, M. A., Karmakar, S., Das, S. S., Geerts, W. J., Haque, A., & Beall, G. W. (2023). Crystallite size-dependent magnetic moment in hydrogen bridged manganese tetracyanonickelate based two-dimensional metal-organic frameworks. Journal of Magnetism and Magnetic Materials, 571, 170573. https://doi.org/https://doi.org/10.1016/j.jmmm.2023.170573

Ahmed, T., Selsor, C., Tate, J., & Geerts, W. J. (2023). Magnetic  Behavior and Chaining of Strontium Ferrite-Nylon Composite Above the Melting  Temperature. In AIP Advances. American Institute of Physics.

Barros, A. O., Kashem, M. N., Geerts, W. J., Luna, D., Li, W., & Yang, J. (2023). Kinematic Modeling and Design of Untethered Soft Mobile Magnetic Robots with Multiple Support Sections. Acta Mechanica.

Howlader, C. Q., Geerts, W. J., & Chen, Y. (2022). Fabricate anti-solvent free tin-lead based perovskite solar cells with MAAc additives. In Organic, Hybrid, and Perovskite Photovoltaics XXIII (Vol. 12209, pp. 1220905-1 1220905-6). SPIE. Retrieved from https://www.spiedigitallibrary.org/proceedings/Download?urlId=10.1117%2F12.2634371&d ownloadType=proceedings%20article&isResultClick=True

Ahmed, T. N., Belduque, M. C., Chen, Y. (Maggie), Tate, J. S., & Geerts, W. J. (2022). Dynamic Viscosity of Strontium Ferrite-Nylon Composite Below the Melting Temperature. AIP Advances, 12(9), 095223. https://doi.org/10.1063/5.0098972

Howlader, C. Q., Khakurel, N., Amyx, D. W., Geerts, W. J., Gibson, G., & Chen, Y. (2022). Pin-hole free MAPb0.75 Sn0.25(I0.5Br0.5)3 films spin casted without antisolvent by adding MAAc additive to Perovskite ink. In Renewable Energy and Power Quality Journal (Vol. 20, p. X-1–5). Retrieved from https://www.icrepq.com/icrepq22/284-22-howlader.pdf

Oliveira, A., Kashem, Md. N. H., Luna, D., Geerts, W. J., Li, W., & Yang, J. (2022). Magnetic Properties of PDMS Embedded with Strontium Ferrite Particles Cured Under Different Magnetic Field Conditions. In AIP Advances. Retrieved from https://aip.scitation.org/doi/10.1063/9.0000338

Henderson, L., Zamora, S., Ahmed, T. N., Belduque Correa, M. C., Tate, J. S., Chen, Y., & Geerts, W. J. (2021). Altering Magnetic Properties of Iron Filament PLA Using Magnetic Field Assisted Additive Manufacturing (MFAAM). Journal of Magnetism and Magnetic Materials, 538. https://doi.org/https://doi.org/10.1016/j.jmmm.2021.168320

Scolfaro, L. M., Mia, M. D., Talukder, M. A. A., Samuels, B. C., Borges, P., Geerts, W. J., & Droopad, R. (n.d.). Stability and Electronic Properties of Ga2O3 :Fe Alloys Studied Using Density Functional Theory Calculations.

Tate, J. S., Belduque, C. M., Geerts, J. J., Ahmed, T., Omer, L., Panta, S., & Thramann, H. (2021). Mechanical Properties of Re-Extruded SrFe12O19(OP-71)/PA12 Filaments via Twin-Screw Extrusion for Fused Filament Fabrication. Diamond Bar, CA, United States: SAMPE-Society for the Advancement of Material and Process Engineering.

Droopad, R., Scolfaro, L. M., Geerts, W. J., Mia, M. D., Samuels, B. C., & Talukder, M. A. A. (2021). Theoretical and experimental study of  (Ga1-XFeX)2O3 ternary alloy. Journal of Crystal Growth, 575. https://doi.org/https://doi.org/10.1016/j.jcrysgro.2021.126353

Tate, J. S., Belduque Correa, M. C., Robinson, R., Medina, A., Ahmed, T., Kala, R., & Geerts, W. J. (2021). Additive Manufactured Strontium Ferrite/Polyamide 12 Composites for Magnetic Devices using Twin-Screw and Single-Screw Extrusion. Diamond Bar, CA, USA: Society for the Advancement of Material and Process Engineering.

Ahmed, T. N., Belduque, M. C., D.C., B., Tate, J. S., & Geerts, W. J. (2021). Time dependence of magnetic moment of strontium-ferrite powder measured with a biaxial vibrating sample magnetometer (VSM). In AIP Advances (Vol. 11, p. 015048). https://doi.org/https://doi.org/10.1063/9.0000216

Shook, J., Borges, P. D., Geerts, W. J., & Scolfaro, L. M. (2020). Evaluation of Ni doping for promoting favorable electronic structures in CuCrO2 and AgCrO2 from a first-principles perspective. Ceramics International.

Twagirayezu, F., Talukder, Md. A. A., & Geerts, W. J. (2020). Magnetic Properties of RF sputtered NiO and Ni0.8Fe0.2O1-d samples grown on SiO2/Si substrates. Materials Research Innovations 24 (2020), Pp. 44-51, 24, 44–51. https://doi.org/https://doi.org/10.1080/14328917.2018.1558797

Shook, J., Scolfaro, L. M., Borges, P. D., & Geerts, W. J. (2019). Structural stability and electronic properties of XTO2 (X= Cu, Ag; T=Al, Cr): An ab initio study including X vacancies and Mg doping. Solid State Sciences, 88, 48.

Petersen, J. E., Scolfaro, L. M., Borges, P. D., & Geerts, W. J. (2019). Symmetry considerations on band filling and first optical transition in NiO. European Physics Journal B, 92, 232.

Acharya, S., Collier, B., & Geerts, W. J. (2019). Dual Beam Modulated Magneto-Optical Measurement Setup. Review of Scientific Instruments, 90, 123001. https://doi.org/doi: 10.1063/1.5117304

Shook, J., Borges, P. D., Scolfaro, L. M., & Geerts, W. J. (2019). Effects of vacancies and p-doping on the optoelectronic properties of Cu- and Ag-based transparent conducting oxides. Journal of Applied Physics, 126, 075702. https://doi.org/https://doi.org/10.1063/1.5088711

Talbert, J. N., Cantrell, S., Talukder, M. A. A., Scolfaro, L., & Geerts, W. J. (2019). Electrical Characterization of Silicon – Nickel Iron Oxide Heterojunctions. In MRS Advances (Vol. 4, pp. 2241–2248). MRS. https://doi.org/DOI: 10.1557/adv.2019.321

Binod, D. C., Oliva, A. A., Ayala, A., Acharya, S., Twagirayezu, F., Talbert, J. N., … Geerts, W. J. (2018). Magnetic Properties of Reactive Co-Sputtered NiFe-Oxide Samples. IEEE Transactions on Magnetics, 55(2). https://doi.org/10.1109/TMAG.2018.2866788

Taludker, M. A. A., & Geerts, W. J. (2017). Jones matrix description of Fabry-Perot interference in a single axis photoelastic modulator and the consequences for the magneto-optical measurement method. AIP Advances, 7, 085320. https://doi.org/https://doi.org/10.1063/1.4999517

Taludker, M. A. A., & Geerts, W. J. (2017). Tilt angle dependence of the modulated interference effect in Photo-elastic Modulators. In AIP Advances (Vol. 7, p. 056719). AIP. https://doi.org/doi:http://dx.doi.org/10.1063/1.4975493

Petersen, J. E., Twagirayezu Fidele, Scolfaro, L. M., Borges Pablo, & Geerts, W. J. (2017). Electronics and Optical properties of antiferromagnetic Iron doped NiO – A first principles study. In AIP Advances (Vol. 7, p. 055711). AIP. https://doi.org/doi:http://dx.doi.org/10.1063/1.4975493

Talukder, M. A. A., Cui, Y., Compton, M., Scolfaro, L., Zollner, S., & Geerts, W. J. (2016). FTIR Ellipsometry study of RF sputtered Permalloy-oxide Thin Films. In MRS Advances (49th ed., Vol. 1, pp. 3361–3366). https://doi.org/10.1557/adv.2016.427

Petersen, J., Twagirayezu, F., Borges, P. D., Solfaro, L., & Geerts, W. J. (2016). Ab initio study of oxygen vacncy effects on electronics and optical properties of NiO. In MRS Advances (Vol. 1, pp. 2617–2622). https://doi.org/10.1557/adv.2016.405

Tamir, J., Tamir, D., Geerts, W., & Dolev, S. (2015). Compressive Scanning of an Object Signature. Natural Computing, 14(3), 457–467. Retrieved from DOI 10.1007/s11047-014-9460-7

Compton, M., Simpson, N., Leblanc, E., Robinson, M., & Geerts, W. (2014). Electrical and Optical Properties of Permalloy Oxide grown by dual ion beam sputtering (2014th ed., Vol. 1708, p. mrss 14-1708-VV08-01-1-mrss 14-1708-VV08-01–06). Mat. Res. Soc. Symp. Conference Proceedings. https://doi.org/10.1557/opl.2014.621

Geerts, W., Simpson, N., Compton, M., & Woodall, A. (2014). Indium Tin Oxide thin films deposited at low temperature using Dual Ion Beam Sputtering (2014th ed., Vol. 1699, pp. mrss14-1699-ll05-28-1-mrss14-1699-ll05-28–6). Mat. Res. Soc. Symp. Conference Proceedings. https://doi.org/doi.org/10.1557/opl.2014.523

Tamir, D., Shaked, N., Geerts, W., & Dolev, S. (2012). Parallel Decomposition of Combinatorial Optimization Problems Using Electro-Optical Vector by Matrix Multiplication Architecture. Journal of Supercomputing, 25, 633–655. https://doi.org/doi:10.1007/s11227-010-0517-9

Tamir, D. E., Shaked, N. T., Geerts, W. J., & Dolev, S. (2011). Compressive Sensing of Object-Signature (2011th ed., Vol. 6748, pp. 63–77). Lecture Notes in Computer Science. https://doi.org/10.1007/978-3-642-22494-2_8

Pandey, R. K., Padmini, P., Kale, P., Dou, J., Lohn, C., Schad, R., … Geerts, W. (2011). Multifunctional Nature of modified iron titanates and their potential applications. In K. M. Nair, Q. Jia, & S. Priya (Eds.) (2011th ed., Vol. 226, pp. 61–75). Advances and Applications in Electroceramics. https://doi.org/10.1002/9781118144480.ch8

Sablik, M. J., Geerts, W. J., Smith, K., Gregory, A., Moore, C., Palmer, D., … de Campos, M. F. (2010). Modelling of Plastic deformation effects in Ferromagnetic Thin Films. IEEE Transactions on Magnetics, 46, 491–494. https://doi.org/10.1109/TMAG.2009.2033456

Pandey, R. K., Padmini, P., Schad, R., Dou, J., Geerts, W., & O’Brien, C. (2009). Novel Magnetic-Semiconductors in Modified FeTiO3 for Radhard Electronics. Journal of Electroceramics, 22, 334–341. https://doi.org/10.1007/s10832-007-9390-1

Tamir, D. E., Shaked, N. T., Geerts, W. J., & Dolev, S. (2009). Combinatorial Optimization Using Electro-Optical Vector by Matrix Multiplication Architecture (2009th ed., Vol. 5882, pp. 130–143). Lecture Notes in Computer Science. https://doi.org/10.1007/978-3-642-10442-8_17

Lohn, C., Geerts, W. J., O’Brien, C., Dou, J., Padmini, P., Pandey, K., & Schad, R. (2008). IV and CV Characteristics of multifunctional ilmenite-hematite 0.67FeTiO3-0.33Fe2O3. In A. Vaseashta & I. N. Mihailescu (Eds.) (2008th ed., Vol. 2, pp. 419–424). Functionalized Nanoscale Materials, Devices and Systems. https://doi.org/10.1007/978-1-4020-8903-9_42

Pandey, R. K., Stern, H., Geerts, W. J., Padmini, P., Kale, P., Dou, J., & Schad, R. (2008). Room Temperature Magnetic-Seimconductors in modified iron titanates: Their properties and potential microelectronics Devices. In P. Vincenzini & G. D’arrigo (Eds.) (2008th ed., Vol. 54, pp. 216–222). Advances in Science and Technology. https://doi.org/10.4028/www.scientific.net/AST.54.216

Pandey, R. K., Padmini, P., Deravi, L. F., Patil, N. N., Kale, P., Zhong, J., … Geerts, W. J. (2006). Magnetic-Semiconductors in Fe-Ti-Oxide Series and their Potential Applications (2006th ed., Vol. 2, pp. 992–997). IEEE proceeding of the 8th International Conference of Solid State and Itegrated Circuit Technology ICSICT 2006. https://doi.org/10.1109/ICSICT.2006.306640

Monreal, Blanda, M., Geerts, W., Galloway, H., & Spencer, G. (2005). A conformationally-immobile, partially-functionalized calixarene as a negative electron beam resist. Journal of Vacuum Science and Technology B, 23, 1998–2002. https://doi.org/10.1116/1.2038027

Craus, C. B., Onoue, T., Ramstock, K., Geerts, W. J., Siekman, M. H., Abelmann, L., & Lodder, J. C. (2005). A read and write element for magnetic probe recording. J. Phys. D: Appl. Phys., 38(2005), 363–370. https://doi.org/10.1088/0022-3727/38/3/002

Schuetze, A., Lewis, W., Brown, C., & Geerts, W. J. (2003). A Lab Class on the Four-Point Probe Technique. American Journal of Physics, 72, 149–153. https://doi.org/10.1119/1.1629085

Garrett, C., Holland, G., Geerts, W. J., Ragan, D., Dubey, A., Rios, S., & Bandyopadhyay, A. K. (2003). Thickness Dependence of the Magnetic Hysteresis of NiFe-31% Films as a function of an Applied isotropic in-plane stress. Journal of Applied Physics, 93(10), 8624–8627. https://doi.org/10.1063/1.1558242

Hellman, F., Geerts, W. J., & Donehew, B. (2003). Magneto-Optical Measurements of Amorphous Gd-Si Alloys. Physical Review B, 67, 12406-1 12406-4. https://doi.org/10.1103/PhysRevB.67.012406

Holland, P., Kempton, M., Ragan, D., Rios, S., Bandyopadhyay, A., Dubey, A., & Geerts, W. (2002). Magnetic Hysteresis Measurements of Thin Films of NiFe-31% under isotropic Stress. Journal of Magnetism and Magnetic Materials, 250, L1–L5.

Geerts, W. J., Donehew, B., Williams, V., & Schmiedel, T. (2002). A setup for measuring magneto-optical Kerr Hysteresis Curves at High Field and Low Temperature. Review of Scientific Instruments, 73, 2086–2089. https://doi.org/10.1063/1.1468683

Bichsel, E. S., Wilson, B., & Geerts, W. J. (2002). Recorded bit pattern imaging of floppy disks and phone-cards with toner-fluid. The Physics Teacher, 40, 150-.

Geerts, W. (1999). MOK3: A high field Magneto-Optical kerr probe. NHMFL: N/A. Retrieved from http://www.magnet.fsu.edu/usershub/scientificdivisions/dcfield/magnetometry/mok3/documents/userman.pdf

Geerts, W. (1999). On the Design of a Magneto-Optical probe for measurements in High fields an at low temperatures. Tallahassee, Florida: N/A. Retrieved from http://www.magnet.fsu.edu/usershub/scientificdivisions/dcfield/magnetometry/mok3/documents/hfmoker.pdf

Hong, J., Caballero, J. A., Geerts, W. J., Childress, J. R., & Pearton, S. J. (1998). Dry and wet etch processes for NiMnSb Heusler Alloy thin Films. J. Electrochemical Society, 144, 1229–1230.

Caballero, J., Geerts, W., Pettrof, F., & Thiele, F. (1998). Magnetic and Magneto-optical Properties of NiMnSb thin films. Journal of Magnetisim and Magnetic Materials, 177, 1229–1230.

Caballero, J. A., Childress, J. F., Geerts, W., Pettrof, F., Galtier, P., Suzuki, Y., … Weller, D. (1997). Low-temperature growth of NiMnSb Heusler alloy thin films (1997th ed., Vol. 475, pp. 15-). Mat. Res. Soc. Symp. Proc.

Caballero, J. A., Geerts, W. J., Childress, J. R., Petroff, F., Galtier, P., Thiele, J. U., & Weller, D. (1997). Structure and Magneto-Optical Properties of Sputter-Deposited NiMnSb Thin Films. Applied Physics Letters, 71, 2382-.

Suzuki, Y., Katayama, T., Geerts, W., Grunberg, P., Takanashi, K., Shreiber, R., … Yuasa, S. (1997). Magneto-Optical effects of ultrathin ferro-, antiferro and non-magnetic films (1997th ed., Vol. 475, pp. 227–237). MRS conference proceedings. https://doi.org/10.1557/PROC-475-227

Bardou, N., Bartenlian, B., Rousseaux, F., Decanini, D., Carcenac, F., Cambril, E., … Ferre, J. (1996). Elaboration and magneto-optical study of submicron magnetic structures in Au/Co/Au ultrathin films. Journal of Magnetism and Magnetic Materials, 156, 139-.

Geerts, W., MacKenzie, J. D., Abernathy, C. E., Pearton, S., & Schmiedel. (1996). Electrical Transport in p-GaN, n-InN, n-InGaN. Solid State Electronics, 39, 1289–1294.

Okuzawa, N., Katayama, T., Fujitani, D., Geerts, W., & Suzuki, Y. (1996). Magneto-Optical Kerr effect in different surfaces of epitaxially grown Co Films. Journal of the Magnetic Society of Japan, 20, 193-.

Katayama, T., Suzuki, Y., & Geerts, W. (1996). Magneto-Optical transition due to a formation of quantum well states in magnetic ultra-thin films and multilayers. Journal of Magnetism and Magnetic Materials, 156, 158-.

Katayama, T., Geerts, W., Suzuki, Y., Fujitani, D., & Okuzawa, N. (1996). Oscillation of magneto-optical Kerr effect in Co ultra-thin films. Journal of Magnetism and Magnetic Materials, 156, 171-.

Geerts, W., Katayama, T., Suzuki, Y., & Childress, J. (1996). Wavelength Dependence of the magneto-optical properties of the interfaces of a Au sandwiched (001) Fe film. Journal of Vacuum Science and Technology B, 14, 3176-.

Hack, J., Ludwig, M. H., Geerts, W., & Hummel, R. E. (1996). Ferromagnetic properties of spark processed photoluminescing Silicon (1996th ed., Vol. 452, pp. 147–149). MRS symposium’s proceedings: Advances in microcrystalline and annocrystalline semiconductors.

Geerts, W. J., MacKenzie, J. D., Abernathy, C. R., Pearton, S. J., & Schmiedel, T. (1996). Temperature dependence of the electrical transport of carbon doped GaN (1996th ed., Vol. 421, pp. 425–428). MRS proceedings: Compound Semiconductor Electronics and Photonics.

Katayama, T., Suzuki, Y., & Geerts, W. J. (1995). A new Magneto-Optical Effect due to Quantum Well States in Metallic Ultrathin films. ETL Reports (Need to Check the Scope of Journal), 7, 63-.

Katayama, T., Fujitani, D., Geerts, W., Okusawa, N., Suzuki, Y., Lee, C. G., … Shimada, Y. (1995). Magneto-Optical Kerr Rotation Spectra in sputtered granular Co-Au alloy films. Journal of the Magnetic Society of Japan, 19, 243-.

Geerts, W., Katayama, T., & Suzuki, Y. (1995). On the Oscillation of the magneto-iotical properties of utrathin epitaxial Fe films. Journal of the Magnetic Society of Japan, 19, 309-.

Suzuki, Y., Geerts, W., & Katayama, T. (1995). The Magneto-Optical quantum size effect of ultra-thin epitaxial Fe films. Optoelectronic-Devices and Technologies, 10, 269-.

Suzuki, Y., Katayama, T., Geerts, W., Bruno, P., & Sawada, H. (1995). The magneto-optical quantum size effect in bcc-Fe (001) and (110) ultrthin films (1995th ed., Vol. 382, pp. 237–246). MRS conference proceedings, Structure and Properties of multi-layereed thin films.

Geerts, W. J., Lodder, C., & Popma, T. (1994). Biaxial Kerr Magnetometry in oblique field for the study of thin films with a perepndicular anisotropy. Journal of Magnetism and Magnetic Materials, 137, 224-.

Katayama, T., Suzuki, Y., Hayashi, M., & Geerts, W. (1994). Change of Magneto-Optical Kerr rotation due to interlayer thickness in magnetically coupled films with noble-metal wedge. Journal of Applied Physics, 75, 6360-.

Geerts, W., Suzuki, Y., Katayama, T., Tanaka, K., Ando, K., & Yoshida, S. (1994). Thickness dependent oscillation of the magneto-optical properties of Au-sanwiched (001) Fe films. Physical Review B, 50, 12581–12583.

Hayashi, M., Katayama, T., Suzuki, Y., Taninaka, M., Thiaville, A., & Geerts, W. J. (1993). Magneto-Optical Kerr rotation spectra in Fe ultrathin film on noble metals. Journal of Magnetism and Magnetic Materials, 126, 547–549.

Geerts, W. J. (1992). Magnetization Distribution at the surface of Co-Cr films: Magneto-Optical, Chemical and Structural characterization. Enschede.

Geerts, W. J., Lodder, J. C., & Popma, T. J. (1992). A Combined Optical and Magneto-Optical measurement System. Review of Scientific Instruments, 64, 1805–1807. https://doi.org/10.1063/1.1143341

Geerts, W. J., Lodder, J. C., & Popma, T. J. (1992). Surface Properties and stray fields of RF-sputtered Co-Cr films. Journal of Magnetism and Magnetic Materials, 104, 971–972.

Simsova, J., Kambersky, V., Gemperle, R., Lodder, J. C., Geerts, W. J., Otten, B., & ten Berge, P. (1991). Domain Structure of Co-Cr films. Journal of Magnetism and Magnetic Materials, 101, 104–107. https://doi.org/10.1016/0304-8853(91)90726-Q

Masuda, T., Geerts, W. J., & Lodder, J. C. (1991). Surface chemical state of sputtered Co-Cr films. Journal of Magnetism and Magnetic Materials, 101, 123-. https://doi.org/10.1016/0304-8853(91)90223-W

Geerts, W. J., te Lintelo, J. G., Lodder, J. C., & Popma, T. J. A. (1990). Anomalous Hc in Co-Cr films. IEEE Transaction on Magnetics, 26, 36–38.