Key Publications

 Magnetostatic Effects onSTEM Analysis of Vacancies in Magnetite Nanoparticles,Paul M. Sharp, Adam Kerrigan, Philip Hasnip, Zlatko Nedelkowski, Sara Majetich, QUentin Ramasse, Demie Kepaptsoglu, Vlado K. Lazarov, Microsc. Microanal. 28, Suppl. 1, 2964 (2022), doi:10.1017/S1432927622010789.

Angle-Dependent Switching in a Magnetic Tunnel Junction Containing a Synthetic Antiferrromagnet, Hao Chen, Brad Parks, Qiand Zhang, Bin Fang, Xixiang Zhang, and Sara A. Majetich, Appl. Phys. Lett. 120, 212401 (2022); dot:10.1063/5.0093044.

Magnetostatic Coupling Effects on Reversal Dynamics, Hao Chen, So Young Jeon, and Sara A. Majetich, J. Phys. D: Appl. Phys. 55, 265002 (2022); doi:10.1088/1361-6463/ac62a1.

Tunnel magnetoresistance detection of skyrmions, Hao Chen, William Bouckaert, and Sara A. Majetich, J. Magn. Magn. Mater. 541, 168552 (2022); doi:10.1016/j/jmmm/2021.168552.

Tuning the dynamics in Fe3O4 nanoparrticle for hyperthermia optimization, Hao Chen, David Billington, Edward RRiordan, Jakob Blomgren, Sean R. Giblin, Christer Johansson, and Sara A. Majetich, Appl. Phys. Lett. 117, 073702  (2020); doi:10.1063/5.0017903.

Magnetic stray fields in nanoscale magnetic tunnel junctions, Sarah Jenkins, Andrea Meo, Luke Elliott, Stephan K. Piotrowski, Mukund Bapna, Roy W. Chantrell, Sara A. Majetich, and Richard F. L. Evans, J. Phys. D: Appl. Phys. 53, 044001 (2020); doi:10.1099/1361-6463/ab4fbf.

The role of faceting and elongation on the magnetic anisotropy of magnetite Fe3O4 nanocrystals, Roberto Moreno-Ortega, Samuel Poyser, Daniel Meilak, Andrea Meo, Sarah Jenkins, Vlado K. Lazarov, Gonzalo, Vallejo-Fernandes, Sara A. Majetich, and Richard F. L. Evans, Sci. Reports 10, 1-14 (2020); doi:10.1038/s41598-020-58976-7.

Correlated Spin Canting in Orderred Core-Shell Fe3O4/MnxFe3-xO4 Nanoparticle Assemblies, Y. Ijiri, I. Hunt-Isaak, H. Pan, J. Hsieh, K. L. Krycka, J. A. Borchers, J. J. Rhyne, S. D. Oberdick, A. Abdelgawad, and S. A. Majetich, Phys. Rev. B 99, 094421 (2019); doi:10.1103/PhysRevB.99.094421.

Magnetoresistance dynamics in superparamagnetic core-shell nanodots, Brad Parks, Ahmed Abdelgawad, Thomas Wong, Richard F. L. Evans, and Sara A. Majetich, Phys. Rev. Applied 13, 014063 (2020); doi:10.1103/PhysRevApplied.13.014063.

Effect of Mo capping in sub-100 nm CoFeB-MgO tunnel junctions with perpendicular magnetic anisotropy, Mukund Bapna, Brad Parks, Samuel D. Oberdick, Hamid Almasi, Congli Sun, Paul A. Voyles, Weigang Wang, and Sara A. Majetich, J. Magn. Magn. Mater. 483, 34 (2019);doi:10.1016/j.jmmm.2019.03.005.

Magnetic Nanoparticles, Sara A. Majetich, in Handbook of Magnetism and Magnetic Materialsm Eds. M. Coey and S. Parkin, Springer Nature Switzerland,  doi:10.1007/978-3-030-63101-7_20-1(2021).

Bipolar electric-field switching of perpendicular magnetic tunnel junctions through voltage-controlled exchange coupling, Delin Zhang, Mukund Bapna, Wei Jiang, Duarte Sousa, Yu-Ching Liao, Zhengyang Zhao, Yang Lv, Protyush Sahu, Azad Naemi, Tony Low, Sara A. Majetich, and Jian-Ping Wang, Nano Letters 22 622 (2022); doi:10.1021/acs.nanolett.1co3395.

Current Control of Time-Averaged Magnetization in Superparamagnetic Tunnel Junctions, Mukund Bapna and Sara A. Majetich, Appl. Phys. Lett. 111, 243107 (2017); doi:10.1063/1.5012091.

Spin Orbit Torque Switching in 20 nm Perpendicular Magnetic Tunnel Junctions, Mukund Bapna, Brad Parks, Samuel D. Oberdick, Sara A. Majetich, Hamid Almasi, and Weigang Wang, Phys. Rev. Appl. 10 024013 (2018); doi:10.1103/PhysRevApplied.10.024013

Spin Waves Across 3-Dimensional, Close-Packed Nanoparticles, Kathryn L. Krycka, James J. Rhyne, Samuel D. Oberdick, Ahmed M. Abdelgawad, Julie A. Borchers, Yumi Ijiri, Sara A. Majetich, and Jeffrey W. Lynn, New Journal of Physics 20, 123020 (2018).

Superparamagnetic perpendicular magnetic tunnel junctions for true random number generators, Bradley Parks, Mukund Bapna, Julianne Igbokwe, Hamid Almasi, Weigang Wang, and Sara A. Majetich, AIP Advances 8, 055903 (2018); doi:10.1063/1.5006422.

Magnetic Vortices in Permalloy Nanocaps Induced by Curvature, Ahmed M. Abdelgawad, Nikhil Nambiar, Mukkund Bapna, Hao Chen, and Sara A. Majetich, AIP Advances 8, 056321 (2018); doi:10.1063/1.5007213.

Spin canting across core/shell Fe3O4/MnxFee3-xO4 nanoparticles, Samuel D. Oberdick, Ahmed Abdelgawad, Carlos Moya, Samaneh Mesbahi-Vasey, Demie Kepaptsoglu, Vlado K. Lazarov, Richard F. L. Evans, Daniel Meilak, Elizabeth Skoropata, Johan van Lierop, Ian Hunt-Isaak, Hillary Pan, Yumi Ijiri, Kathryn L. Krycka, Julie A. Borchers, Sara A. Majetich, Sci. Reports 8, 3425 (2018); doi:10.1038/s41598-018-21626-0.

Magnetic Properties of Cube-Shaped Fe3O4 Nanoparticles in dilute, 2D, and 3D assemblies, C. Moya, A. M. Abdelgawad, N. Nambiar, and S. A. Majetich, J. Phys. D: Appl. Phys. 50, 326003 (2017); doi:10.1088/1361-6463/aa7b11.
Origina of reduced magnetization and domain formation in small magnetite nanoparticles, Zlatki Nedelkowski, Demie Kepaptsoglou, Leonardo Lari, Tianlong Wen, Ryan A. Booth, Samuel D. Oberdick, Daniel Gilks, Quentin M. Ramasse, Richard F. L. Evans, Sara A. Majetich, and Vlado K. Lazarov, Sci. Reports 7, 45997 (2017); doi:10.1038/srep45997.

Size and Voltage Dependence of Effective Anisotropy in Co40Fe40B20 Magnetic Tunnel Junctions, Stephan K. Piotrowski, Mukund Bapna, Samuel D. Oberdick, Sara A. Majetich, Mingen Li, Chia-Ling Chien, Rizvi Ahmed, and R. H. Victora, Phys. Rev. B 94, 014404 (2016); doi:10.1103/PhysRevB.94.014404.
 

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