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

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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
Creators:
CreatorsEmailORCIDORCID Put Code
Li, Man-RongUNSPECIFIEDorcid.org/0000-0001-8424-9134UNSPECIFIED
Stephens, Peter W.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Retuerto, MariaUNSPECIFIEDorcid.org/0000-0001-7564-3500UNSPECIFIED
Sarkar, TapatiUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Grams, Christoph P.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Hemberger, JoachimUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Croft, Mark C.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Walker, DavidUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Greenblatt, MarthaUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
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:
KeywordsLanguage
HIGH-PRESSURE SYNTHESIS; LINBO3-TYPE STRUCTURE; DIELECTRIC-PROPERTIES; ROOM-TEMPERATURE; THIN-FILM; ZNSNO3; PEROVSKITESMultiple languages
Chemistry, MultidisciplinaryMultiple languages
Refereed: Yes
URI: http://kups.ub.uni-koeln.de/id/eprint/43571

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