Effect of Zr on magnetic properties and electrical resistivity of Sm(CobalFe0.09Cuo.o9Zrx)7.68 magnets

被引：15

作者：

Li, Tianyi ^{[1
,2
]}

Liu, Zhuang ^{[1
]}

Feng, Yanping ^{[1
]}

Liu, Lei ^{[1
]}

Zhang, Chaoyue ^{[1
]}

Yan, Guanghui ^{[1
]}

Feng, Zaixin ^{[2
]}

Lee, Don ^{[1
]}

Yan, Aru ^{[1
]}

机构：

[1] Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Key Lab Magnet Mat & Devices, Ningbo 315201, Zhejiang, Peoples R China

[2] North Univ China, Sch Mat Sci & Engn, Taiyuan 030051, Shanxi, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2018年 / 753卷

基金：

中国博士后科学基金;

关键词：

2:17 type Sm-Co magnets; Magnetic properties; Lamellar phase; Electrical resistivity; PERMANENT-MAGNETS; SM(COFECUZR)(Z) MAGNETS; PHASE; MICROSTRUCTURE;

D O I：

10.1016/j.jallcom.2018.04.222

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

In this work, the effect of Zr content on magnetic properties and electrical resistivity of Sm(CobalFe0.09 Cu0.09Zrx)(7.68) (x = 0.020, 0.025, 0.030, 0.035) high temperature magnets has been investigated. More Zr content results in the decrease of average cell size and the increase of the density of lamellar structure. In addition, a large number of phase boundaries between lamellar phase and cellular structure have also been formed. The intrinsic coercivity of 550 degrees C enhances from 3.21 kOe to 6.05 kOe with the increase of Zr content. Furthermore, electrical resistivity shows obviously different variation in different directions with increasing Zr content. At room temperature and 127 degrees C, the electrical resistivity improves from 68.2 mu Omega cm to 91.7 mu Omega cm and from 87.1 mu Omega cm to 103.3 mu Omega cm with increasing x from 0.020 to 0.035 in the direction parallel to c-axis, respectively. However, there is only a slight increase in the electrical resistivity in the direction perpendicular to c-axis. The rise of electrical resistivity in different directions has been discussed. Research results indicate that increasing the density of the lamellar phase is an effective way to increase electrical resistivity in the 2:17-type Sm-Co magnets. (C) 2018 Elsevier B.V. All rights reserved.

引用

页码：162 / 166

页数：5

共 21 条

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