Temperature-dependent electrical, elastic and magnetic properties of sol–gel synthesized Bi0.9Ln0.1FeO3Ln = Nd, Sm)

Schiemer, J and Withers, R L and Carpenter, M. A. and Liu, Y and Wang, J L and Norén, L and Li, Q and Hutchison, W (2012) Temperature-dependent electrical, elastic and magnetic properties of sol–gel synthesized Bi0.9Ln0.1FeO3Ln = Nd, Sm). Journal of Physics: Condensed Matter, 24 (12). p. 125901. ISSN 0953-8984, 1361-648X DOI 10.1088/0953-8984/24/12/125901

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Abstract

This report details correlated electrical, mechanical and magnetic behaviour in BiFeO3 ceramics doped with 10% Ln (Ln = Sm, Nd) ions on the Bi, or perovskite A, site and synthesized by a sol–gel method. The ceramics exhibit bulk piezoelectric and ferroelectric properties and clear ferroelectric domain patterns through piezoresponse force microscopy. Resonant ultrasound spectroscopy, dielectric spectroscopy and magnetometry studies show correlated magnetoelectromechanical behaviour and the existence of weak ferromagnetism for both compositions. An anomaly with simultaneous mechanical and magnetic signatures is discovered in both materials near room temperature, while previously reported transitions and anomalies are found to exhibit electro- and/or magnetomechanical coupling. Magnetism is significantly enhanced in the Sm doped sample, which is a promising multiferroic material.

Item Type: Article
Uncontrolled Keywords: 2012AREP; IA63;
Subjects: 03 - Mineral Sciences
Divisions: 03 - Mineral Sciences
Journal or Publication Title: Journal of Physics: Condensed Matter
Volume: 24
Page Range: p. 125901
Identification Number: 10.1088/0953-8984/24/12/125901
Depositing User: Sarah Humbert
Date Deposited: 05 Apr 2012 17:06
Last Modified: 23 Jul 2013 10:03
URI: http://eprints.esc.cam.ac.uk/id/eprint/2456

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