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  Phase Transition and Anomalous Low Temperature Ferromagnetic Phase in Pr0.6Sr0.4MnO3 Single Crystals

Rößler, S., Harikrishnan, S., Kumar, C. M. N., Bhat, H. L., Elizabeth, S., Rößler, U. K., et al. (2009). Phase Transition and Anomalous Low Temperature Ferromagnetic Phase in Pr0.6Sr0.4MnO3 Single Crystals. Journal of Superconductivity and Novel Magnetism, 22, 205-208. doi:10.1007/s10948-008-0377-1.

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 Creators:
Rößler, S.1, Author           
Harikrishnan, S., Author
Kumar, C. M. N., Author
Bhat, H. L., Author
Elizabeth, S., Author
Rößler, U. K., Author
Steglich, F.2, Author           
Wirth, S.3, Author           
Affiliations:
1Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863445              
2Frank Steglich, Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863467              
3Steffen Wirth, Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863460              

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Free keywords: Manganites; Phase separation
 Abstract: We report on the magnetic and electrical properties of Pr0.6Sr0.4MnO3 single crystals. This compound undergoes a continuous paramagnetic-ferromagnetic transition with a Curie temperature T (C)301 K and a first-order structural transition at T (S)64 K. At T (S), the magnetic susceptibility exhibits an abrupt jump, and a corresponding small hump is seen in the resistivity. The critical behavior of the static magnetization and the temperature dependence of the resistivity are consistent with the behavior expected for a nearly isotropic ferromagnet with short-range exchange belonging to the Heisenberg universality class. The magnetization (M-H) curves below T (S) are anomalous in that the virgin curve lies outside the subsequent M-H loops. The hysteretic structural transition at T (S) as well as the irreversible magnetization processes below T (S) can be explained by phase separation between a high-temperature orthorhombic and a low-temperature monoclinic ferromagnetic phase.

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Language(s): eng - English
 Dates: 2009
 Publication Status: Issued
 Pages: -
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 Table of Contents: -
 Rev. Type: -
 Identifiers: eDoc: 404480
ISI: 000262315900020
DOI: 10.1007/s10948-008-0377-1
 Degree: -

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Title: Journal of Superconductivity and Novel Magnetism
Source Genre: Journal
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Pages: - Volume / Issue: 22 Sequence Number: - Start / End Page: 205 - 208 Identifier: ISSN: 1557-1939