Spin-wave dispersion and exchange stiffness in Nd$_2$Fe$_{14}$B and $R$Fe$_{11}$Ti ($R$=Y, Nd, Sm) from first-principles calculations

• Main Authors: Fukazawa, Taro, Akai, Hisazumi, Harashima, Yosuke, Miyake, Takashi
• Format: Journal Article
• Language: English
• Published: 29.10.2020
• Subjects: Physics - Materials Science

Phys. Rev. B 103, 024418 (2021) We theoretically investigate spin-wave dispersion in rare-earth magnet compounds by using first-principles calculations and a method we call the reciprocal-space algorithm (RSA). The value of the calculated exchange stiffness for Nd$_2$Fe$_{14}$B is within the range o...