Increase of magnetic transition temperatures by reduction of local disorder for perovskite manganites.

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We report the synthesis of Sr{sub 1-x}Ca{sub x}MnO{sub 3} and La{sub 0.5}Ba{sub 0.5}MnO{sub 3} perovskites over extended cation and oxygen composition ranges and describe the dependence of their phase stability on the tolerance factor t = t(x,T,{delta}) that is a function of composition, temperature, and oxygen content. We show that magnetic transition temperatures depend strongly on the tolerance factor and charge disorder while dependence on the structural disorder is less important. By reducing charge and structural disorder we have significantly increased the Curie and Neel temperatures for perovskite manganites.

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Dabrowski, B.; Chmaissem, O.; Mais, J.; Kolesnik, S.; Jorgensen, J. D. & Short, S. July 2, 2002.

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We report the synthesis of Sr{sub 1-x}Ca{sub x}MnO{sub 3} and La{sub 0.5}Ba{sub 0.5}MnO{sub 3} perovskites over extended cation and oxygen composition ranges and describe the dependence of their phase stability on the tolerance factor t = t(x,T,{delta}) that is a function of composition, temperature, and oxygen content. We show that magnetic transition temperatures depend strongly on the tolerance factor and charge disorder while dependence on the structural disorder is less important. By reducing charge and structural disorder we have significantly increased the Curie and Neel temperatures for perovskite manganites.

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  • 2002 MRS Spring Meeting, San Francisco, CA (US), 04/01/2002--04/05/2002

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  • Report No.: ANL/MSD/CP-108112
  • Grant Number: W-31-109-ENG-38
  • Office of Scientific & Technical Information Report Number: 797892
  • Archival Resource Key: ark:/67531/metadc738754

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  • July 2, 2002

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  • Oct. 19, 2015, 7:39 p.m.

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  • March 29, 2016, 7:45 p.m.

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Dabrowski, B.; Chmaissem, O.; Mais, J.; Kolesnik, S.; Jorgensen, J. D. & Short, S. Increase of magnetic transition temperatures by reduction of local disorder for perovskite manganites., article, July 2, 2002; Illinois. (digital.library.unt.edu/ark:/67531/metadc738754/: accessed August 22, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.