Pressure effects on the charge-ordering state in Sm0.2Ca0.8Mn1-xRuxO3 (x=0,0.04)

Vladimir Markovich; Evgeny Rosenberg; Gad Gorodetsky; C. Martin; A. Maignan; M. Hervieu; B. Raveau

doi:10.1103/PhysRevB.64.224410

Pressure effects on the charge-ordering state in Sm_0.2Ca_0.8Mn_1-xRu_xO₃ (x=0,0.04)

Vladimir Markovich, Evgeny Rosenberg, Gad Gorodetsky, C. Martin, A. Maignan, M. Hervieu, B. Raveau

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

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Abstract

Transport properties of Sm_0.2Ca_0.8Mn_1-xRu_xO₃ (x=0,0.04) have been investigated in the temperature range 15-300 K in external magnetic fields up to 1.5 T and hydrostatic pressure up to 1 GPa. The 4% Ru doping in Mn site converts the low-temperature robust orbital ordered phase observed in the undoped compound to a two-phase (ferromagnetic and charge ordered) ground state. As a result of such doping (phase-separated ground state), colossal magnetoresistance, slow relaxation of resistivity with logarithmic time dependence, and prehistory effects that are enhanced by pressure are observed in Sm_0.2Ca_0.8Mn_0.96 Ru_0.04O₃. In contrast, the above effects are absent in Sm_0.2Ca_0.8MnO₃.

Original language	English GB
Article number	224410
Pages (from-to)	2244101-2244105
Number of pages	5
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	64
Issue number	22
DOIs	https://doi.org/10.1103/PhysRevB.64.224410
State	Published - 1 Dec 2001
Externally published	Yes

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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10.1103/PhysRevB.64.224410

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title = "Pressure effects on the charge-ordering state in Sm0.2Ca0.8Mn1-xRuxO3 (x=0,0.04)",

abstract = "Transport properties of Sm0.2Ca0.8Mn1-xRuxO3 (x=0,0.04) have been investigated in the temperature range 15-300 K in external magnetic fields up to 1.5 T and hydrostatic pressure up to 1 GPa. The 4% Ru doping in Mn site converts the low-temperature robust orbital ordered phase observed in the undoped compound to a two-phase (ferromagnetic and charge ordered) ground state. As a result of such doping (phase-separated ground state), colossal magnetoresistance, slow relaxation of resistivity with logarithmic time dependence, and prehistory effects that are enhanced by pressure are observed in Sm0.2Ca0.8Mn0.96 Ru0.04O3. In contrast, the above effects are absent in Sm0.2Ca0.8MnO3.",

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AU - Markovich, Vladimir

AU - Rosenberg, Evgeny

AU - Gorodetsky, Gad

AU - Martin, C.

AU - Maignan, A.

AU - Hervieu, M.

AU - Raveau, B.

PY - 2001/12/1

Y1 - 2001/12/1

N2 - Transport properties of Sm0.2Ca0.8Mn1-xRuxO3 (x=0,0.04) have been investigated in the temperature range 15-300 K in external magnetic fields up to 1.5 T and hydrostatic pressure up to 1 GPa. The 4% Ru doping in Mn site converts the low-temperature robust orbital ordered phase observed in the undoped compound to a two-phase (ferromagnetic and charge ordered) ground state. As a result of such doping (phase-separated ground state), colossal magnetoresistance, slow relaxation of resistivity with logarithmic time dependence, and prehistory effects that are enhanced by pressure are observed in Sm0.2Ca0.8Mn0.96 Ru0.04O3. In contrast, the above effects are absent in Sm0.2Ca0.8MnO3.

AB - Transport properties of Sm0.2Ca0.8Mn1-xRuxO3 (x=0,0.04) have been investigated in the temperature range 15-300 K in external magnetic fields up to 1.5 T and hydrostatic pressure up to 1 GPa. The 4% Ru doping in Mn site converts the low-temperature robust orbital ordered phase observed in the undoped compound to a two-phase (ferromagnetic and charge ordered) ground state. As a result of such doping (phase-separated ground state), colossal magnetoresistance, slow relaxation of resistivity with logarithmic time dependence, and prehistory effects that are enhanced by pressure are observed in Sm0.2Ca0.8Mn0.96 Ru0.04O3. In contrast, the above effects are absent in Sm0.2Ca0.8MnO3.

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Pressure effects on the charge-ordering state in Sm_0.2Ca_0.8Mn_1-xRu_xO₃ (x=0,0.04)

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