Griffiths phase' versus chemical disorder in low-doped manganites: La 0.9Sr0.1MnO3 crystal revisited

E. Rozenberg; M. Auslender; A. I. Shames; I. Felner; D. Mogilyansky; Ya M. Mukovskii

doi:10.1063/1.3537945

Griffiths phase' versus chemical disorder in low-doped manganites: La _0.9Sr_0.1MnO₃ crystal revisited

E. Rozenberg^*, M. Auslender, A. I. Shames, I. Felner, D. Mogilyansky, Ya M. Mukovskii

^*Corresponding author for this work

Racah Institute of Physics

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

13 Scopus citations

Abstract

Magnetic properties, electron paramagnetic and ferromagnetic resonance were studied in the vicinity and above ferromagnetic-paramagnetic (FM-PM) phase transition of the La_0.9Sr_0.1MnO₃ crystal. It appears that complex chemical/structural disorder inherent to manganites influences strongly on both magnetic and resonance properties of this crystal. In particular, it changes the nature of a FM-PM transition to the first- or mixed-order one and induces FM clustering in their PM state. The latter effect results in coexistence of resonance signals, and non-linearity of the PM inverse magnetic susceptibility versus temperature. This model seems to be much more realistic for description of the PM state in La_0.9Sr _0.1MnO₃ than an idealized Griffiths phase approach.

Original language	English
Article number	07D902
Journal	Journal of Applied Physics
Volume	109
Issue number	7
DOIs	https://doi.org/10.1063/1.3537945
State	Published - 1 Apr 2011

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abstract = "Magnetic properties, electron paramagnetic and ferromagnetic resonance were studied in the vicinity and above ferromagnetic-paramagnetic (FM-PM) phase transition of the La0.9Sr0.1MnO3 crystal. It appears that complex chemical/structural disorder inherent to manganites influences strongly on both magnetic and resonance properties of this crystal. In particular, it changes the nature of a FM-PM transition to the first- or mixed-order one and induces FM clustering in their PM state. The latter effect results in coexistence of resonance signals, and non-linearity of the PM inverse magnetic susceptibility versus temperature. This model seems to be much more realistic for description of the PM state in La0.9Sr 0.1MnO3 than an idealized Griffiths phase approach.",

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T1 - Griffiths phase' versus chemical disorder in low-doped manganites

T2 - La 0.9Sr0.1MnO3 crystal revisited

AU - Rozenberg, E.

AU - Auslender, M.

AU - Shames, A. I.

AU - Felner, I.

AU - Mogilyansky, D.

AU - Mukovskii, Ya M.

PY - 2011/4/1

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N2 - Magnetic properties, electron paramagnetic and ferromagnetic resonance were studied in the vicinity and above ferromagnetic-paramagnetic (FM-PM) phase transition of the La0.9Sr0.1MnO3 crystal. It appears that complex chemical/structural disorder inherent to manganites influences strongly on both magnetic and resonance properties of this crystal. In particular, it changes the nature of a FM-PM transition to the first- or mixed-order one and induces FM clustering in their PM state. The latter effect results in coexistence of resonance signals, and non-linearity of the PM inverse magnetic susceptibility versus temperature. This model seems to be much more realistic for description of the PM state in La0.9Sr 0.1MnO3 than an idealized Griffiths phase approach.

AB - Magnetic properties, electron paramagnetic and ferromagnetic resonance were studied in the vicinity and above ferromagnetic-paramagnetic (FM-PM) phase transition of the La0.9Sr0.1MnO3 crystal. It appears that complex chemical/structural disorder inherent to manganites influences strongly on both magnetic and resonance properties of this crystal. In particular, it changes the nature of a FM-PM transition to the first- or mixed-order one and induces FM clustering in their PM state. The latter effect results in coexistence of resonance signals, and non-linearity of the PM inverse magnetic susceptibility versus temperature. This model seems to be much more realistic for description of the PM state in La0.9Sr 0.1MnO3 than an idealized Griffiths phase approach.

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Griffiths phase' versus chemical disorder in low-doped manganites: La _0.9Sr_0.1MnO₃ crystal revisited

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