Li, Man-Rong ORCID: 0000-0001-8424-9134, Stephens, Peter W., Retuerto, Maria
ORCID: 0000-0001-7564-3500, Sarkar, Tapati, Grams, Christoph P., Hemberger, Joachim, Croft, Mark C., Walker, David and Greenblatt, Martha
(2014).
Designing Polar and Magnetic Oxides: Zn2FeTaO6 - in Search of Multiferroics.
J. Am. Chem. Soc., 136 (24).
S. 8508 - 8512.
WASHINGTON:
AMER CHEMICAL SOC.
ISSN 0002-7863
Abstract
Polar oxides are technically of great interest but difficult to prepare. Our recent discoveries predicted that polar oxides can be synthesized in the corundum-derivative A(2)BB'O-6 family with unusually small cations at the A-site and a d(0) electron configuration ion at B'-site. When magnetic transition-metal ions are incorporated more interesting polar magnetic oxides can form. In this work we experimentally verified this prediction and prepared LiNbO3 (LN)-type polar magnetic Zn2FeTaO6 via high pressure and temperature synthesis. The crystal structure analysis indicates highly distorted ZnO6 and (Fe/Ta)O-6 octahedra, and an estimated spontaneous polarization (P-S) of similar to 50 mu C/cm(2) along the c-axis was obtained from point charge model calculations. Zn2Fe3+Ta5+O6 has a lower magnetic transition temperature (T-N similar to 22 K) than the Mn2FeTaO6 analogue but is less conductive. The dielectric and polarization measurements indicate a potentially switchable component.
Item Type: | Journal Article | ||||||||||||||||||||||||||||||||||||||||
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URN: | urn:nbn:de:hbz:38-435716 | ||||||||||||||||||||||||||||||||||||||||
DOI: | 10.1021/ja502774v | ||||||||||||||||||||||||||||||||||||||||
Journal or Publication Title: | J. Am. Chem. Soc. | ||||||||||||||||||||||||||||||||||||||||
Volume: | 136 | ||||||||||||||||||||||||||||||||||||||||
Number: | 24 | ||||||||||||||||||||||||||||||||||||||||
Page Range: | S. 8508 - 8512 | ||||||||||||||||||||||||||||||||||||||||
Date: | 2014 | ||||||||||||||||||||||||||||||||||||||||
Publisher: | AMER CHEMICAL SOC | ||||||||||||||||||||||||||||||||||||||||
Place of Publication: | WASHINGTON | ||||||||||||||||||||||||||||||||||||||||
ISSN: | 0002-7863 | ||||||||||||||||||||||||||||||||||||||||
Language: | English | ||||||||||||||||||||||||||||||||||||||||
Faculty: | Faculty of Mathematics and Natural Sciences | ||||||||||||||||||||||||||||||||||||||||
Divisions: | Faculty of Mathematics and Natural Sciences > Department of Physics > Institute of Physics II | ||||||||||||||||||||||||||||||||||||||||
Subjects: | no entry | ||||||||||||||||||||||||||||||||||||||||
Uncontrolled Keywords: |
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Refereed: | Yes | ||||||||||||||||||||||||||||||||||||||||
URI: | http://kups.ub.uni-koeln.de/id/eprint/43571 |
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