Journal
PHYSICAL REVIEW LETTERS
Volume 95, Issue 21, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.95.217204
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- Engineering and Physical Sciences Research Council [GR/S81407/01] Funding Source: researchfish
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We demonstrate that the interplay of in-plane biaxial and uniaxial anisotropy fields in (Ga, Mn)As results in a spin reorientation transition and an anisotropic ac susceptibility which is fully consistent with a simple single-domain model. The uniaxial and biaxial anisotropy constants vary, respectively, as the square and fourth power of the spontaneous magnetization across the whole temperature range up to T-C. The weakening of the anisotropy at the transition may be of technological importance for applications involving thermally assisted magnetization switching.
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