本文用朗道自由能展开研究了有电畴的铁电薄膜的相变特性。

The phase transition characteristics of ferroelectric films with domain structure were studied using Landau free energy expansion.

youdao

结果表明：原子的非简谐振动会影响单畴铁磁粒子的自由能，但是不会影响弛豫时间。

Considering atomic anharmonic vibration, the authors have figured out the expression of free energy and relaxation of single-domain ferromagnetic granule in magnetic field.

youdao