Short-range charge order correlations in Sm1-xSrxMnO3 near a half-doped composition revealed by EPR

A. I. Shames; A. Yakubovsky; V. Amelichev; O. Gorbenko; A. Kaul

doi:10.1016/S0038-1098(01)00472-0

Short-range charge order correlations in Sm_1-xSr_xMnO₃ near a half-doped composition revealed by EPR

A. I. Shames, A. Yakubovsky, V. Amelichev, O. Gorbenko, A. Kaul

Department of Physics

Research output: Contribution to journal › Article › peer-review

21 Scopus citations

Abstract

EPR study of polycrystalline Sm_1-xSr_xMnO₃ samples (x=0.40, 0.45, 0.50) within the temperature range 100-500K has revealed some details of its phase diagram. A change of the first-order ferromagnetic transition at T_C≈130K (for x=0.40, 0.45) into the second-order one (for x=0.50) was clearly demonstrated. Analysis of the EPR line intensities reveal a charge ordering above 250K for all the compositions in spite of its short-range nature. For x=0.50 composition, a short-range antiferromagnetic ordering was also found below 170K. The latter might be responsible for suppression of the first-order type of the ferromagnetic transition.

Original language	English
Pages (from-to)	103-106
Number of pages	4
Journal	Solid State Communications
Volume	121
Issue number	2-3
DOIs	https://doi.org/10.1016/S0038-1098(01)00472-0
State	Published - 2 Jan 2002

Keywords

A. Magnetic materials
B. EPR
C. Magnetic phase transitions
D. Charge ordering

ASJC Scopus subject areas

General Chemistry
Condensed Matter Physics
Materials Chemistry

Access to Document

10.1016/S0038-1098(01)00472-0

Cite this

@article{d8920c3a01d240adb0e8b8474c70b135,

title = "Short-range charge order correlations in Sm1-xSrxMnO3 near a half-doped composition revealed by EPR",

abstract = "EPR study of polycrystalline Sm1-xSrxMnO3 samples (x=0.40, 0.45, 0.50) within the temperature range 100-500K has revealed some details of its phase diagram. A change of the first-order ferromagnetic transition at TC≈130K (for x=0.40, 0.45) into the second-order one (for x=0.50) was clearly demonstrated. Analysis of the EPR line intensities reveal a charge ordering above 250K for all the compositions in spite of its short-range nature. For x=0.50 composition, a short-range antiferromagnetic ordering was also found below 170K. The latter might be responsible for suppression of the first-order type of the ferromagnetic transition.",

keywords = "A. Magnetic materials, B. EPR, C. Magnetic phase transitions, D. Charge ordering",

author = "Shames, {A. I.} and A. Yakubovsky and V. Amelichev and O. Gorbenko and A. Kaul",

note = "Funding Information: We are grateful to S. Gudenko for useful discussions. The research was supported by the Dozor Foundation, Faculty of Natural Sciences, BGU (AYa—Dozor Fellowship), Israeli Ministry of Immigrant Absorption (ASh—KAMEA Fellowship) and by INTAS Grant IR-97-11954.",

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T1 - Short-range charge order correlations in Sm1-xSrxMnO3 near a half-doped composition revealed by EPR

AU - Shames, A. I.

AU - Yakubovsky, A.

AU - Amelichev, V.

AU - Gorbenko, O.

AU - Kaul, A.

N1 - Funding Information: We are grateful to S. Gudenko for useful discussions. The research was supported by the Dozor Foundation, Faculty of Natural Sciences, BGU (AYa—Dozor Fellowship), Israeli Ministry of Immigrant Absorption (ASh—KAMEA Fellowship) and by INTAS Grant IR-97-11954.

PY - 2002/1/2

Y1 - 2002/1/2

N2 - EPR study of polycrystalline Sm1-xSrxMnO3 samples (x=0.40, 0.45, 0.50) within the temperature range 100-500K has revealed some details of its phase diagram. A change of the first-order ferromagnetic transition at TC≈130K (for x=0.40, 0.45) into the second-order one (for x=0.50) was clearly demonstrated. Analysis of the EPR line intensities reveal a charge ordering above 250K for all the compositions in spite of its short-range nature. For x=0.50 composition, a short-range antiferromagnetic ordering was also found below 170K. The latter might be responsible for suppression of the first-order type of the ferromagnetic transition.

AB - EPR study of polycrystalline Sm1-xSrxMnO3 samples (x=0.40, 0.45, 0.50) within the temperature range 100-500K has revealed some details of its phase diagram. A change of the first-order ferromagnetic transition at TC≈130K (for x=0.40, 0.45) into the second-order one (for x=0.50) was clearly demonstrated. Analysis of the EPR line intensities reveal a charge ordering above 250K for all the compositions in spite of its short-range nature. For x=0.50 composition, a short-range antiferromagnetic ordering was also found below 170K. The latter might be responsible for suppression of the first-order type of the ferromagnetic transition.

KW - A. Magnetic materials

KW - B. EPR

KW - C. Magnetic phase transitions

KW - D. Charge ordering

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DO - 10.1016/S0038-1098(01)00472-0

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EP - 106

JO - Solid State Communications

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