Metamagnetism in manganate magnesium ferrite-Reference-Cited by-同舟云学术

Metamagnetism in manganate magnesium ferrite

Published:2019-02-01 Issue:1 Volume:70 Page:78-81
ISSN:1339-309X
Container-title:Journal of Electrical Engineering
language:en
Short-container-title:

Author:

Sláma Jozef¹,Pal’a Jozef¹,Šoka Martin¹,Lokaj Jan²

Affiliation:

1. Institute of Electrical Engineering, Faculty of Electrical Engineering and Information Technology , Slovak University of Technology in Bratislava , Slovakia

2. Institute of Material Science, Faculty of Material Science and Technology in Trnava , Slovak University of Technology in Bratislava , Slovakia

Abstract

Abstract The metamagnetic properties of the manganese magnesium ferrites having the general formula Mn0.7Mg0.3Fe2O4 prepared by the standard ceramic technique have been studied. It is proposed that when a change of temperature at adequate magnetic field is applied in a Mn0.7Mg0.3Fe2O4 a magnetic phase transition will be generated, giving rise to an antiferromagnetic (AFM) state from ferrimagnetic (FM) phase. The critical transition field H ac = 300 A/m was estimated for critical magnetization curve of transition from the metamagnetic behavior to FM behavior of sample. The FM to AFM transition in these ferrites is accompanied by a Néel type to Yafet-Kittel type transition and gradual spin ordering changes of the unit cell volume. The application of an external magnetic field to the low-temperatures AFM state causes the sample to reset to the original FM state.

Publisher

Walter de Gruyter GmbH

Link

https://www.sciendo.com/pdf/10.2478/jee-2019-0012

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