Structural and Magnetic Phase Transitions in High Pressure Laves Phases R(Fe1-xMx)2

DOI

10.2991/isees-19.2019.24How to use a DOI?

Keywords

laves phases; phase transition; Curie temperature; magnetostriction.

Abstract

The paper presents the results of study of structural and magnetic properties of alloys of quasi-binary systems R(Fe1-xMx)2, where R is REE and M is 3d-metal. It is shown that synthesis under extreme conditions, i.e. high temperatures and high pressures makes it possible to obtain alloys with the Laves phase structure, which cannot be obtained under normal synthesis. These are alloys with rare earth elements Yb, Nd and Pr. For all systems studied the structural and magnetic phase diagrams are determined. The areas of single-phase patterns are determined. It is shown that structural phase transitions occur through the morphotropic region, where two Laves phases coexist, i.e. cubic C15 and hexagonal C14 phases. In addition the temperatures of magnetic order-disorder phase transitions (Curie temperatures) are determined for these systems. For the system of alloys Pr(Fe1-xAlx)2 these values are compared with the data obtained from Mossbauer studies of temperature.

Copyright

© 2019, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Z.S. Umkhaeva
AU  - A.S. Ilyushin
PY  - 2019/08
DA  - 2019/08
TI  - Structural and Magnetic Phase Transitions in High Pressure Laves Phases R(Fe1-xMx)2
BT  - Proceedings of the International Symposium "Engineering and Earth Sciences: Applied and Fundamental Research" dedicated to the 85th anniversary of H.I. Ibragimov (ISEES 2019)
PB  - Atlantis Press
SP  - 707
EP  - 711
SN  - 2590-3217
UR  - https://doi.org/10.2991/isees-19.2019.24
DO  - 10.2991/isees-19.2019.24
ID  - Umkhaeva2019/08
ER  -