Magnetostriction and spin reorientation in ferromagnetic Laves phase Pr(GaxFe1-x)1.9 compounds

• 作者: Min-Yu Zeng Qing Tang Zhi-Wei Mei Cai-Yan Lu Yan-Mei Tang Xiang Li Yun He Ze-Ping Guo
• 来源期刊: 中国物理B（英文版）
• 年，卷（期）: 2021,（6）
• 所属期刊栏目: CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES
• 页码范围: 644-650
• 页数: 7页
• 语种: 英文
• DOI: 10.1088/1674-1056/abe1a3

摘要

The magnetostriction,magnetization,and spin reorientation properties in Pr(GaxFe1-x)1.9 alloys have been investi-gated by high-precision x-ray diffraction (XRD) step scanning,magnetization,and M(o)ssbauer spectra measurements.Ga substitution reduces the magnetostriction (λ||) with magnetic field H ≥ 8 kOe (1 Oe =1.33322 × 102 Pa),but it also increases the λ|| value when H ≤ 8 kOe at 5 K.Spin-reorientations (SR) are observed in all the alloys investigated,as determined by the step scanned XRD,M(o)ssbauer spectra,and the abnormal temperature dependence of magnetization.An increase of the spin reorientation temperature (TsR) due to Ga substitution is found in the phase diagram,which is different from the decrease one in many R(TxFe1-x)1.9 (T =Co,A1,Mn) alloys.The present work provides a method to control the easy magnetization direction (EMD) or TSR for developing an anisotropic compensation system.