Synthesis and properties of the double perovskites La2NiVO6, La2CoVO6, and La2CoTiO6

K. L. Holman; Q Huang; T. Klimczuk; K. Trzebiatowski; J. W. G. Bos; E Morosan; J W Lynn; R J Cava

doi:10.1016/j.jssc.2006.09.013

Synthesis and properties of the double perovskites La2NiVO6, La2CoVO6, and La2CoTiO6

K. L. Holman, Q Huang, T. Klimczuk, K. Trzebiatowski, J. W. G. Bos, E Morosan, J W Lynn, R J Cava

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Abstract

The double perovskites La2CoVO6, La2CoTiO6, and La2NiVO6, are described. Rietveld fitting of neutron and powder X-ray diffraction data show La2NiVO6 and La2CoVO6 to have a disordered arrangement of B-cations whereas La2CoTiO6 shows ordering of the B-cations (with similar to 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 La2CoVO6, La2CoTiO6, and La2NiVO6, respectively, and magnetic transitions are observed. La2CoTiO6 prepared by our method differs from material prepared by lower-temperature routes. A simple anti ferromagnetic spin model is consistent with the data for La2CoTiO6. These compounds are semiconductors with bandgaps of 0.41 (La2CoVO6), 1.02 (La2CoTiO6) and 0.45 eV (La2NiVO6). (c) 2006 Elsevier Inc. All rights reserved.

Original language	English
Pages (from-to)	75-83
Number of pages	9
Journal	Journal of Solid State Chemistry
Volume	180
Issue number	1
DOIs	https://doi.org/10.1016/j.jssc.2006.09.013
Publication status	Published - Jan 2007

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10.1016/j.jssc.2006.09.013

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@article{16294cc0631545e48d3677cb5e8a39b8,

title = "Synthesis and properties of the double perovskites La2NiVO6, La2CoVO6, and La2CoTiO6",

abstract = "The double perovskites La2CoVO6, La2CoTiO6, and La2NiVO6, are described. Rietveld fitting of neutron and powder X-ray diffraction data show La2NiVO6 and La2CoVO6 to have a disordered arrangement of B-cations whereas La2CoTiO6 shows ordering of the B-cations (with similar to 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 La2CoVO6, La2CoTiO6, and La2NiVO6, respectively, and magnetic transitions are observed. La2CoTiO6 prepared by our method differs from material prepared by lower-temperature routes. A simple anti ferromagnetic spin model is consistent with the data for La2CoTiO6. These compounds are semiconductors with bandgaps of 0.41 (La2CoVO6), 1.02 (La2CoTiO6) and 0.45 eV (La2NiVO6). (c) 2006 Elsevier Inc. All rights reserved.",

author = "Holman, {K. L.} and Q Huang and T. Klimczuk and K. Trzebiatowski and Bos, {J. W. G.} and E Morosan and Lynn, {J W} and Cava, {R J}",

year = "2007",

month = jan,

doi = "10.1016/j.jssc.2006.09.013",

language = "English",

volume = "180",

pages = "75--83",

journal = "Journal of Solid State Chemistry",

issn = "0022-4596",

publisher = "Academic Press Inc.",

number = "1",

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TY - JOUR

T1 - Synthesis and properties of the double perovskites La2NiVO6, La2CoVO6, and La2CoTiO6

AU - Holman, K. L.

AU - Huang, Q

AU - Klimczuk, T.

AU - Trzebiatowski, K.

AU - Bos, J. W. G.

AU - Morosan, E

AU - Lynn, J W

AU - Cava, R J

PY - 2007/1

Y1 - 2007/1

N2 - The double perovskites La2CoVO6, La2CoTiO6, and La2NiVO6, are described. Rietveld fitting of neutron and powder X-ray diffraction data show La2NiVO6 and La2CoVO6 to have a disordered arrangement of B-cations whereas La2CoTiO6 shows ordering of the B-cations (with similar to 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 La2CoVO6, La2CoTiO6, and La2NiVO6, respectively, and magnetic transitions are observed. La2CoTiO6 prepared by our method differs from material prepared by lower-temperature routes. A simple anti ferromagnetic spin model is consistent with the data for La2CoTiO6. These compounds are semiconductors with bandgaps of 0.41 (La2CoVO6), 1.02 (La2CoTiO6) and 0.45 eV (La2NiVO6). (c) 2006 Elsevier Inc. All rights reserved.

AB - The double perovskites La2CoVO6, La2CoTiO6, and La2NiVO6, are described. Rietveld fitting of neutron and powder X-ray diffraction data show La2NiVO6 and La2CoVO6 to have a disordered arrangement of B-cations whereas La2CoTiO6 shows ordering of the B-cations (with similar to 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 La2CoVO6, La2CoTiO6, and La2NiVO6, respectively, and magnetic transitions are observed. La2CoTiO6 prepared by our method differs from material prepared by lower-temperature routes. A simple anti ferromagnetic spin model is consistent with the data for La2CoTiO6. These compounds are semiconductors with bandgaps of 0.41 (La2CoVO6), 1.02 (La2CoTiO6) and 0.45 eV (La2NiVO6). (c) 2006 Elsevier Inc. All rights reserved.

U2 - 10.1016/j.jssc.2006.09.013

DO - 10.1016/j.jssc.2006.09.013

M3 - Article

SN - 0022-4596

VL - 180

SP - 75

EP - 83

JO - Journal of Solid State Chemistry

JF - Journal of Solid State Chemistry

IS - 1

ER -

Synthesis and properties of the double perovskites La2NiVO6, La2CoVO6, and La2CoTiO6

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