Strain
المؤلف:
J. M. D. COEY
المصدر:
Magnetism and Magnetic Materials
الجزء والصفحة:
237
23-2-2021
2355
Strain
An external stress σij applied to a sample introduces a strain termin the energy:
(1)
where ∈ij = ˆmij klHkHl is the magnetoelastic strain tensor. For an isotropic material with uniaxial stress σ along Oz, the contribution depending on M is −1/2λsσ(3 cos2 θ − 1), where λs is the spontaneous magnetostriction. This is equivalent to a uniaxial anisotropy with Ku = (3/2)λsσ.
الاكثر قراءة في المغناطيسية
اخر الاخبار
اخبار العتبة العباسية المقدسة
