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Evidence of Weak Ferromagnetism in Pb(Fe2/3W1/3)O3 Powders by Means of Non-resonant Microwave Absorption

Authors
  • Alvarez, G.
  • Montiel, H.
  • Conde-Gallardo, A.
  • Zamorano, R.
Type
Published Article
Journal
Journal of Superconductivity and Novel Magnetism
Publisher
Springer-Verlag
Publication Date
Dec 04, 2013
Volume
27
Issue
5
Pages
1329–1333
Identifiers
DOI: 10.1007/s10948-013-2451-6
Source
Springer Nature
Keywords
License
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Abstract

We report on the effects of temperature and dc magnetic field on non-resonant microwave absorption measurements at X-band (8.8–9.8 GHz) in Pb(Fe2/3W1/3)O3 powders, for the 294–425 K temperature range. Two techniques are used: the magnetically modulated microwave absorption spectroscopy (MAMMAS) and the low-field microwave absorption (LFMA). MAMMAS response showed distinctive features associated with para-antiferromagnetic transition at TN=334.3 K, and below TN a weak ferromagnetism is also observed, and it is attributed to canting of Fe+3 ion sublattices in the antiferromagnetic matrix. The low-field microwave absorption (LFMA) is used to give further knowledge on this material, where this technique also gives evidence of the magnetic transition, suggesting a weak ferromagnetism at room temperature.

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