Magnetic properties of RCo2 compounds in the exchange-striction model of ferrimagnets

The original version of the exchange-striction model of a ferrimagnet has been employed for calculating a number of magnetic properties of R Co 2 ferrimagnets, where R = Er, Ho, Dy, Tb, and Gd are rareearth ions. The following magnetic properties are calculated: pressure dependence of the Curie temp...

Full description

Saved in:
Bibliographic Details
Published in:Physics of metals and metallography 2017, Vol.118 (1), p.21-27
Main Authors: Valiev, E. Z., Teplykh, A. E.
Format: Article
Language:English
Subjects:
Chemistry and Materials Science
Electrical and Magnetic Properties
Materials Science
Metallic Materials
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The original version of the exchange-striction model of a ferrimagnet has been employed for calculating a number of magnetic properties of R Co 2 ferrimagnets, where R = Er, Ho, Dy, Tb, and Gd are rareearth ions. The following magnetic properties are calculated: pressure dependence of the Curie temperature ( Т С ), temperature dependences of magnetization in sublattices of cobalt and rare-earth atoms, and isotherms of magnetization of these lattices at Т > Т С . For an ErСо 2 sample, the Н–Т phase diagram has been constructed and the magnetization in the magnetic fields Н = 0–70 Т has been calculated. The calculated and experimental results have been compared. Based on the exchange-striction model, the qualitative explanation of the difference in the type of the magnetic phase transformation in the intermetallic compounds with R = Tb and Gd and R = Er, Ho, and Dy is given.
ISSN:0031-918X
1555-6190
DOI:10.1134/S0031918X16120164