Magnetic properties of RCo2 compounds in the exchange-striction model of ferrimagnets
- Authors: Valiev E.Z.1, Teplykh A.E.1
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Affiliations:
- Mikheev Institute of Metal Physics, Ural Branch
- Issue: Vol 118, No 1 (2017)
- Pages: 21-27
- Section: Electrical and Magnetic Properties
- URL: https://journals.rcsi.science/0031-918X/article/view/166825
- DOI: https://doi.org/10.1134/S0031918X16120164
- ID: 166825
Cite item
Abstract
The original version of the exchange-striction model of a ferrimagnet has been employed for calculating a number of magnetic properties of RCo2 ferrimagnets, where R = Er, Ho, Dy, Tb, and Gd are rareearth ions. The following magnetic properties are calculated: pressure dependence of the Curie temperature (ТС), temperature dependences of magnetization in sublattices of cobalt and rare-earth atoms, and isotherms of magnetization of these lattices at Т > ТС. For an ErСо2 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.
About the authors
E. Z. Valiev
Mikheev Institute of Metal Physics, Ural Branch
Author for correspondence.
Email: valiev@imp.uran.ru
Russian Federation, ul. S. Kovalevskoi 18, Ekaterinburg, 620990
A. E. Teplykh
Mikheev Institute of Metal Physics, Ural Branch
Email: valiev@imp.uran.ru
Russian Federation, ul. S. Kovalevskoi 18, Ekaterinburg, 620990