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Observation of room-temperature ferromagnetism in Co-doped Bi0.5K0.5TiO3 materials

Observation of room-temperature ferromagnetism in Co-doped Bi0.5K0.5TiO3 materials We report the band gap modification and strong room ferromagnetism by substituting the Co ions for the Ti site of Bi0.5K0.5TiO3 materials. The predicted band gap of 2.11 eV and magnetic moment of 2.7 μB/Co are reproduced precisely in UV–Vis spectroscopy and superconducting quantum interference device experiments, respectively. We elucidate the driving mechanisms for these results in terms of the spin-exchange splitting between spin subbands in the presence of substitution ions and high-spin crystal field energy spectrum. This method would provide a promising approach to get single-phase multiferroics and resolve the problem of the scarcity of single-phase multiferroics in nature. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Applied Physics A: Materials Science Processing Springer Journals

Observation of room-temperature ferromagnetism in Co-doped Bi0.5K0.5TiO3 materials

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References (11)

Publisher
Springer Journals
Copyright
Copyright © 2017 by Springer-Verlag GmbH Germany
Subject
Physics; Condensed Matter Physics; Optical and Electronic Materials; Nanotechnology; Characterization and Evaluation of Materials; Surfaces and Interfaces, Thin Films; Operating Procedures, Materials Treatment
ISSN
0947-8396
eISSN
1432-0630
DOI
10.1007/s00339-017-1173-1
Publisher site
See Article on Publisher Site

Abstract

We report the band gap modification and strong room ferromagnetism by substituting the Co ions for the Ti site of Bi0.5K0.5TiO3 materials. The predicted band gap of 2.11 eV and magnetic moment of 2.7 μB/Co are reproduced precisely in UV–Vis spectroscopy and superconducting quantum interference device experiments, respectively. We elucidate the driving mechanisms for these results in terms of the spin-exchange splitting between spin subbands in the presence of substitution ions and high-spin crystal field energy spectrum. This method would provide a promising approach to get single-phase multiferroics and resolve the problem of the scarcity of single-phase multiferroics in nature.

Journal

Applied Physics A: Materials Science ProcessingSpringer Journals

Published: Aug 1, 2017

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