Adjusting exchange bias and coercivity of magnetic layered systems with varying anisotropies

作者：Ehrmann nee Tillmanns A^*; Blachowicz T

来源：Journal of Applied Physics, 2011, 109(8): 083923.

DOI：10.1063/1.3575170

The impact of a variation of anisotropy constants on the resulting coercivity and exchange bias has been analyzed modeling the total energy density in thin layered ferromagnetic/antiferromagnetic in-plane systems. For a broad range of fourfold, uniaxial, and unidirectional anisotropies, our results illustrate that the exchange bias can grow significantly for a sample rotation off the cooling field direction, while for other combinations of anisotropies, a positive exchange bias can be found near or even in the cooling field direction. These findings allow identification of anisotropies based on superconducting quantum interference device or magneto-optical Kerr effect measurements as well as tailoring desired angular dependencies for magnetoelectronic applications.

• 出版日期2011-4-15