Pressure-induced new spin-states in Ni-25at%Mn mechanical alloy under high pressure

被引：0

作者：

Sun, N. Q. ^{[1
]}

Zach, R. ^{[2
]}

Ono, F. ^{[3
]}

机构：

[1] JFE Mineral Co Ltd, Adv Mat Developing Ctr, Res Labs, 1 Niihamacho, Chiba 2600826, Japan

[2] Cracow Univ Technol, Inst Phys, Krakow, Poland

[3] Okayama Univ Sci, Kita Ku, 1-1 Ridaicho, Okayama 7000005, Japan

来源：

7TH GLOBAL CONFERENCE ON MATERIALS SCIENCE AND ENGINEERING (CMSE2018) | 2019年 / 474卷

关键词：

DISORDERED NI-MN; MAGNETIC-PROPERTIES; CURIE-TEMPERATURE; NI3MN; NI-20;

D O I：

10.1088/1757-899X/474/1/012021

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

AC-susceptibility measurements in mechanically alloyed Ni-25at%Mn were made under high hydrostatic pressures up to 7.5 GPa by using a cubic anvil press in the low-temperature range from 4.2 K to 300 K. At ambient pressure a reentrant spin glass (RSG) state was observed below 58 K, followed by a ferromagnetic (FM) state with the Curie temperature (T-C) at 120 K. T-C decreased with increasing pressure up to 4.3 GPa, while the transition temperature from RSG to FM increased to merge with T-C at 70 K, and then, with further increasing pressure the FM state disappeared, and a spin glass (SG) state appeared. The local moments of this high-pressure SG phase decreased with pressure. The results were compared with a bulk alloy made by the conventional method of melting. In the bulk alloy, a new high-pressure magnetic phase appeared having almost pressure-independent local magnetic moments.

引用

页数：8