Fabrication and magnetic properties of Fe and Co co-doped ZrO2

J. Okabayashi; S. Kono; Y. Yamada; K. Nomura

doi:10.1063/1.3662044

AIP Advances (Dec 2011)

Fabrication and magnetic properties of Fe and Co co-doped ZrO2

J. Okabayashi,
S. Kono,
Y. Yamada,
K. Nomura

Affiliations

J. Okabayashi: Research Center for Spectrochemistry, University of Tokyo, 113-0033, Tokyo, Japan
S. Kono: Department of Chemistry, Tokyo University of Science, 162-8601, Tokyo, Japan
Y. Yamada: Department of Chemistry, Tokyo University of Science, 162-8601, Tokyo, Japan
K. Nomura: Department of Applied Chemistry, University of Tokyo, 113-8656, Tokyo, Japan

DOI: https://doi.org/10.1063/1.3662044
Journal volume & issue: Vol. 1, no. 4
pp. 042138 – 042138-7

Abstract

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We investigate the effects of Fe and Co co-doping on the magnetic and electronic properties of ZrO2 ceramics prepared by a sol-gel method, and study their dependence on the annealing temperature. Dilute Fe and Co co-doping into ZrO2 exhibits ferromagnetic behavior at room temperature for annealing temperatures above 900 °C, accompanying the phase transition from tetragonal to monoclinic structure in ZrO2. The electronic structures are studied by x-ray absorption spectroscopy and Mössbauer spectroscopy, which suggest that the Fe3+ and Co2+/Co3+ mixing states are dominant in Fe and Co co-doped ZrO2.

Published in AIP Advances

ISSN: 2158-3226 (Online)
Publisher: AIP Publishing LLC
Country of publisher: United States
LCC subjects: Science: Physics
Website: http://aipadvances.aip.org/

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