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Title: Structural and magnetotransport transitions in the electron-doped Pr{sub 1{minus}x}Sr{sub x}MnO{sub 3} (0.85 {le} x {le} 1) manganites

Abstract

The exploration of the Mn{sup 4+}-rich side of the Pr{sub 1{minus}x}Sr{sub x}MnO{sub 3} system has allowed the extension of the domain of the cubic perovskite, by using a two-step process, combining synthesis under Ar flow at high temperature and O{sub 2} pressure annealing at lower temperature. The authors show that these Pr-doped cubic perovskites exhibit a coupled structural (cubic-tetragonal) and magnetic (para-antiferro) transition connected with a resistivity jump at the same temperature. The strong interplay between lattice, charges, and spins for these oxides results from the appearance at low temperature of the distorted C-type antiferromagnetic structure. The Pr{sub 1{minus}x}Sr{sub x}MnO{sub 3} magnetic phase diagram shows, for 0.9 {le} x < 1 (i.e., on the Mn{sup 4+}-rich side), the existence at low temperature of C- and G-type antiferromagnetism. The absence of ferromagnetic-antiferromagnetic competition explains that magnetoresistance properties are not observed in this system, in contrast to Mn{sup 4+}-rich Ln{sub 1{minus}x}Ca{sub x}MnO{sub 3} systems.

Authors:
; ; ; ; ; ; ; ;
Publication Date:
Research Org.:
Univ. de Caen (FR)
OSTI Identifier:
20080270
Resource Type:
Journal Article
Journal Name:
Chemistry of Materials
Additional Journal Information:
Journal Volume: 12; Journal Issue: 5; Other Information: PBD: May 2000; Journal ID: ISSN 0897-4756
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; MANGANESE OXIDES; STRONTIUM OXIDES; PRASEODYMIUM OXIDES; DOPED MATERIALS; MAGNETORESISTANCE; CRYSTAL STRUCTURE

Citation Formats

Hervieu, M., Martin, C., Maignan, A., Van Tendeloo, G., Jirak, Z., Hejtmanek, J., Barnabe, A., Thopart, D., and Raveau, B. Structural and magnetotransport transitions in the electron-doped Pr{sub 1{minus}x}Sr{sub x}MnO{sub 3} (0.85 {le} x {le} 1) manganites. United States: N. p., 2000. Web. doi:10.1021/cm000016o.
Hervieu, M., Martin, C., Maignan, A., Van Tendeloo, G., Jirak, Z., Hejtmanek, J., Barnabe, A., Thopart, D., & Raveau, B. Structural and magnetotransport transitions in the electron-doped Pr{sub 1{minus}x}Sr{sub x}MnO{sub 3} (0.85 {le} x {le} 1) manganites. United States. doi:10.1021/cm000016o.
Hervieu, M., Martin, C., Maignan, A., Van Tendeloo, G., Jirak, Z., Hejtmanek, J., Barnabe, A., Thopart, D., and Raveau, B. Mon . "Structural and magnetotransport transitions in the electron-doped Pr{sub 1{minus}x}Sr{sub x}MnO{sub 3} (0.85 {le} x {le} 1) manganites". United States. doi:10.1021/cm000016o.
@article{osti_20080270,
title = {Structural and magnetotransport transitions in the electron-doped Pr{sub 1{minus}x}Sr{sub x}MnO{sub 3} (0.85 {le} x {le} 1) manganites},
author = {Hervieu, M. and Martin, C. and Maignan, A. and Van Tendeloo, G. and Jirak, Z. and Hejtmanek, J. and Barnabe, A. and Thopart, D. and Raveau, B.},
abstractNote = {The exploration of the Mn{sup 4+}-rich side of the Pr{sub 1{minus}x}Sr{sub x}MnO{sub 3} system has allowed the extension of the domain of the cubic perovskite, by using a two-step process, combining synthesis under Ar flow at high temperature and O{sub 2} pressure annealing at lower temperature. The authors show that these Pr-doped cubic perovskites exhibit a coupled structural (cubic-tetragonal) and magnetic (para-antiferro) transition connected with a resistivity jump at the same temperature. The strong interplay between lattice, charges, and spins for these oxides results from the appearance at low temperature of the distorted C-type antiferromagnetic structure. The Pr{sub 1{minus}x}Sr{sub x}MnO{sub 3} magnetic phase diagram shows, for 0.9 {le} x < 1 (i.e., on the Mn{sup 4+}-rich side), the existence at low temperature of C- and G-type antiferromagnetism. The absence of ferromagnetic-antiferromagnetic competition explains that magnetoresistance properties are not observed in this system, in contrast to Mn{sup 4+}-rich Ln{sub 1{minus}x}Ca{sub x}MnO{sub 3} systems.},
doi = {10.1021/cm000016o},
journal = {Chemistry of Materials},
issn = {0897-4756},
number = 5,
volume = 12,
place = {United States},
year = {2000},
month = {5}
}