Cited 0 time in
Cited 0 time in
The Azimuthal Dependence of Exchange Bias Effect and Its Analysis by Spin Glass Model in Ni0.8Fe0.2/CoxNi1-xO Bilayers
- The Azimuthal Dependence of Exchange Bias Effect and Its Analysis by Spin Glass Model in Ni0.8Fe0.2/CoxNi1-xO Bilayers
- Yoo, Woosuk; Choo, Seongmin; Jo, Sinyong; You, Chun-Yeol; Hong, Jung-Il; Lee, Kyujoon; Jung, Myung-Hwa
- DGIST Authors
- You, Chun-Yeol; Hong, Jung-Il
- Issue Date
- IEEE Access, 9, 221315-21322
- Article Type
- Author Keywords
- Magnetic field measurement; Nickel; Temperature dependence; Magnetic hysteresis; Magnetic fields; Glass; Spintronics; antiferromagnetic materials; anisotropic magnetoresistance; Temperature measurement
- Digital storage; Glass; Magnetic storage; Spin glass; Antiferromagnetic layers; Antiferromagnets; Azimuthal dependence; Bilayer thin films; Exchange bias effects; Exchange-bias fields; Spin valve; Spin-glass models; Nickel compounds
- Exchange bias (EB) effect has been vigorously researched for many years due to its possible applications in information storage and spintronics, especially in spin valves for magnetic recording devices. Even though many models have been expounded to this day, they do not prove convincingly the origins of EB effect. We attempt to establish the azimuthal dependence of EB effect with respect to varying the composition of the antiferromagnet CoxNi1-xO and temperature. In this report, we deposited the bilayer thin films of Ni0.8Fe0.2/CoxNi1-xO with x varying from 0.4 to 0.8 by magnetron sputtering and studied the variation of exchange bias field and coercivity. The EB effect was investigated for various external parameters such as temperature, the composition of antiferromagnetic layer, and the direction of magnetic field. The comparison between the calculations and experimental data showed good consistency with the spin glass model, and we suggest the validity of spin glass model to understand the origin of exchange bias effect in the Ni0.8Fe0.2/CoxNi1-xO bilayers.
- Institute of Electrical and Electronics Engineers Inc.
- Related Researcher
Spin Phenomena for Information Nano-devices(SPIN) Lab
Spintronics; Condensed Matter Physics; Magnetic Materials & Thin Films; Micromagnetic Simulations; Spin Nano-Devices
There are no files associated with this item.
- Department of Physics and ChemistrySpin Phenomena for Information Nano-devices(SPIN) Lab1. Journal Articles
Department of Physics and ChemistrySpin Nanotech Laboratory1. Journal Articles
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.