Magnetization process and interlayer coupling in MnNi/Co/Ag(Cu)/Py high-temperature annealed spin valves

Authors: Nguyen Anh Tuan*, Luong Van Su, Tran Hoai Dung, Nguyen Anh Tue, Hoang Quoc Khanh


MnNi/Co/Ag/Py and MnNi/Co/Cu/Py spin valves, where Py is the symbol for permalloy Ni81Fe19, were prepared using magnetron sputtering followed by a high temperature annealing at Ta = 300°C and 400°C for 30 minutes in high vacuum (~10-5 torr). The magnetization process and the magnetic coupling between ferromagnetic layers of these spin valves were investigated. The results show a weak magnetic coupling behavior, moreover, a weak positive exchange bias coupling between Co and Py layers, and a trend of an out-of-plane magnetic anisotropy in these spin valves. The origin of these features or behaviors are discussed in detailed. These results will be useful information for technological adjustments to achieve the expected properties for magnetic coupling and magnetic anisotropy of the spin valve devices.


Spin valve, magnetization process, magnetic coupling, out-of-plane anisotropy, positive exchange biased coupling
Pages : 69-73

Related Articles:

Authors : Dang Thanh Le, Nguyen Duc Hoang, Nguyen Thi Bac, Nguyen Van Toan*, Chu Manh Hung
Authors : Le Thi Hong, Vy Anh Vuong, Nguyen Tat Thang, Nguyen Xuan Thai, Nguyen Van Toan, Dang Thi Thanh Le, Chu Manh Hung*
Authors : Nguyễn Thành Nhân*, Nguyễn Huy Ninh, Trần Vũ Minh, Nguyễn Đức Huy, Lê Anh Tuấn
Authors : Đinh Công Trường*, Vương Tiến Dũng, Đinh Đức Mạnh, Bùi Xuân Long
Authors : Nguyễn Hữu Dũng, Trịnh Xuân Anh, Nguyễn Duy Cường*, Huỳnh Thị Bích Hảo*, Nguyễn THị Thu Hiền, Dương Thanh Tùng