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Title: Synthesis and properties of the double perovskites La{sub 2}NiVO{sub 6}, La{sub 2}CoVO{sub 6}, and La{sub 2}CoTiO{sub 6}

Abstract

The double perovskites La{sub 2}CoVO{sub 6}, La{sub 2}CoTiO{sub 6}, and La{sub 2}NiVO{sub 6}, are described. Rietveld fitting of neutron and powder X-ray diffraction data show La{sub 2}NiVO{sub 6} and La{sub 2}CoVO{sub 6} to have a disordered arrangement of B-cations whereas La{sub 2}CoTiO{sub 6} shows ordering of the B-cations (with {approx}5% Co/Ti inversion). Curie-Weiss fits to the linear region of the 1/{chi} plots reveal Weiss temperatures of -107, -34.8, and 16.3 K for La{sub 2}CoVO{sub 6}, La{sub 2}CoTiO{sub 6}, and La{sub 2}NiVO{sub 6}, respectively, and magnetic transitions are observed. La{sub 2}CoTiO{sub 6} prepared by our method differs from material prepared by lower-temperature routes. A simple antiferromagnetic spin model is consistent with the data for La{sub 2}CoTiO{sub 6}. These compounds are semiconductors with bandgaps of 0.41 (La{sub 2}CoVO{sub 6}), 1.02 (La{sub 2}CoTiO{sub 6}) and 0.45 eV (La{sub 2}NiVO{sub 6}). - Graphical abstract: The antiferromagnetic structure of La{sub 2}CoTiO{sub 6} as prepared by high-temperature routes with spins showing the P2/m' magnetic symmetry.

Authors:
 [1];  [2];  [3];  [3];  [4];  [4];  [2];  [4]
  1. Department of Chemistry, Princeton University, Princeton, NJ 08544 (United States), E-mail: kholman@princeton.edu
  2. NIST Center for Neutron Research, National Institute of Standards and Technology, Gaithersburg, MD 20899 (United States)
  3. Faculty of Applied Physics and Mathematics, Gdansk University of Technology, Narutowicza 11/12, 80-952 Gdansk (Poland)
  4. Department of Chemistry, Princeton University, Princeton, NJ 08544 (United States)
Publication Date:
OSTI Identifier:
21015621
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Solid State Chemistry; Journal Volume: 180; Journal Issue: 1; Other Information: DOI: 10.1016/j.jssc.2006.09.013; PII: S0022-4596(06)00512-3; Copyright (c) 2006 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; ANTIFERROMAGNETISM; COBALT COMPOUNDS; LANTHANUM COMPOUNDS; NEUTRON DIFFRACTION; NICKEL COMPOUNDS; OXIDES; PEROVSKITE; POWDERS; SEMICONDUCTOR MATERIALS; SPIN; SYMMETRY; SYNTHESIS; TITANIUM COMPOUNDS; VANADIUM COMPOUNDS; X-RAY DIFFRACTION

Citation Formats

Holman, K.L., Huang, Q., Klimczuk, T., Trzebiatowski, K., Bos, J.W.G., Morosan, E., Lynn, J.W., and Cava, R.J.. Synthesis and properties of the double perovskites La{sub 2}NiVO{sub 6}, La{sub 2}CoVO{sub 6}, and La{sub 2}CoTiO{sub 6}. United States: N. p., 2007. Web. doi:10.1016/j.jssc.2006.09.013.
Holman, K.L., Huang, Q., Klimczuk, T., Trzebiatowski, K., Bos, J.W.G., Morosan, E., Lynn, J.W., & Cava, R.J.. Synthesis and properties of the double perovskites La{sub 2}NiVO{sub 6}, La{sub 2}CoVO{sub 6}, and La{sub 2}CoTiO{sub 6}. United States. doi:10.1016/j.jssc.2006.09.013.
Holman, K.L., Huang, Q., Klimczuk, T., Trzebiatowski, K., Bos, J.W.G., Morosan, E., Lynn, J.W., and Cava, R.J.. Mon . "Synthesis and properties of the double perovskites La{sub 2}NiVO{sub 6}, La{sub 2}CoVO{sub 6}, and La{sub 2}CoTiO{sub 6}". United States. doi:10.1016/j.jssc.2006.09.013.
@article{osti_21015621,
title = {Synthesis and properties of the double perovskites La{sub 2}NiVO{sub 6}, La{sub 2}CoVO{sub 6}, and La{sub 2}CoTiO{sub 6}},
author = {Holman, K.L. and Huang, Q. and Klimczuk, T. and Trzebiatowski, K. and Bos, J.W.G. and Morosan, E. and Lynn, J.W. and Cava, R.J.},
abstractNote = {The double perovskites La{sub 2}CoVO{sub 6}, La{sub 2}CoTiO{sub 6}, and La{sub 2}NiVO{sub 6}, are described. Rietveld fitting of neutron and powder X-ray diffraction data show La{sub 2}NiVO{sub 6} and La{sub 2}CoVO{sub 6} to have a disordered arrangement of B-cations whereas La{sub 2}CoTiO{sub 6} shows ordering of the B-cations (with {approx}5% Co/Ti inversion). Curie-Weiss fits to the linear region of the 1/{chi} plots reveal Weiss temperatures of -107, -34.8, and 16.3 K for La{sub 2}CoVO{sub 6}, La{sub 2}CoTiO{sub 6}, and La{sub 2}NiVO{sub 6}, respectively, and magnetic transitions are observed. La{sub 2}CoTiO{sub 6} prepared by our method differs from material prepared by lower-temperature routes. A simple antiferromagnetic spin model is consistent with the data for La{sub 2}CoTiO{sub 6}. These compounds are semiconductors with bandgaps of 0.41 (La{sub 2}CoVO{sub 6}), 1.02 (La{sub 2}CoTiO{sub 6}) and 0.45 eV (La{sub 2}NiVO{sub 6}). - Graphical abstract: The antiferromagnetic structure of La{sub 2}CoTiO{sub 6} as prepared by high-temperature routes with spins showing the P2/m' magnetic symmetry.},
doi = {10.1016/j.jssc.2006.09.013},
journal = {Journal of Solid State Chemistry},
number = 1,
volume = 180,
place = {United States},
year = {Mon Jan 15 00:00:00 EST 2007},
month = {Mon Jan 15 00:00:00 EST 2007}
}