Negative Thermal Expansion and Spontaneous Magnetostriction of Nd2Fe16.5Cr0.5 Compound

• 来源期刊: 中国物理快报（英文版）
• 年，卷（期）: 2020,（1）
• 页码范围: 48-50
• 页数: 3页
• 语种: 英文
• DOI: 10.1088/0256-307X/37/1/016501

摘要

The structural,thermal expansion,and magnetic properties of the Nd2Fe16.5 Cr0.5 compound are investigated by means of x-ray diffraction and magnetization measurements.The Nd2Fe16.5 Cr0.5 compound has a rhombohedral Th2Zn17-type structure.There exists a small negative thermal expansion resulting from a spontaneous magnetostriction in the magnetic state of the Nd2Fe16.5Cr0.5 compound.The average thermal expansion coefficient is -1.06 × 10-6/K in a temperature range 299-394 K.The spontaneous magnetostrictive deformation and the Curie temperature are discussed.