Magnetization and ac susceptibility studies of the magnetic phase separation in La0.8Ca0.2MnO3 and La0.78Ca0.22MnO3 single crystals

V. Markovich; I. Fita; R. Puzniak; M. I. Tsindlekht; A. Wisniewski; G. Gorodetsky

doi:10.1103/PhysRevB.66.094409

Magnetization and ac susceptibility studies of the magnetic phase separation in La_0.8Ca_0.2MnO₃ and La_0.78Ca_0.22MnO₃ single crystals

V. Markovich
, I. Fita
, R. Puzniak
, M. I. Tsindlekht
, A. Wisniewski
, G. Gorodetsky

Department of Physics

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

57 Scopus citations

Abstract

Ferromagnetic and transport properties of La_0.8Ca_0.2MnO₃ and La_0.78Ca_0.22MnO₃ single crystals were studied in temperature range 4.2 K<T<300 K and under hydrostatic pressure up to 12 kbar. It was found that the above compounds exhibit different shifts of Curie temperatures T_C under pressure. For La_0.8Ca_0.2MnO₃ dT_C/dP≈0.3 K/kbar, whereas for La_0.78Ca_0.22MnO₃ a stronger nonlinear increase T_C(P) was observed. A significant change of the easy axis magnetization with temperature was found for La_0.8Ca_0.2MnO₃, in the (110) plane. The above effect is almost entirely suppressed by an external pressure of 6 kbar. The ac susceptibility of La_0.8Ca_0.2MnO₃ shows a sharp frequency dependent increase at T = 80 K, upon heating indicating a transition to cluster spin-glass formation. The results observed are discussed regarding a coexistence of ferromagnetic metallic and ferromagnetic insulating phases.

Original language	English
Article number	094409
Pages (from-to)	944091-944096
Number of pages	6
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	66
Issue number	9
DOIs	https://doi.org/10.1103/PhysRevB.66.094409
State	Published - 1 Sep 2002

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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Markovich, V., Fita, I., Puzniak, R., Tsindlekht, M. I., Wisniewski, A., & Gorodetsky, G. (2002). Magnetization and ac susceptibility studies of the magnetic phase separation in La_0.8Ca_0.2MnO₃ and La_0.78Ca_0.22MnO₃ single crystals. Physical Review B - Condensed Matter and Materials Physics, 66(9), 944091-944096. Article 094409. https://doi.org/10.1103/PhysRevB.66.094409

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title = "Magnetization and ac susceptibility studies of the magnetic phase separation in La0.8Ca0.2MnO3 and La0.78Ca0.22MnO3 single crystals",

abstract = "Ferromagnetic and transport properties of La0.8Ca0.2MnO3 and La0.78Ca0.22MnO3 single crystals were studied in temperature range 4.2 KC under pressure. For La0.8Ca0.2MnO3 dTC/dP≈0.3 K/kbar, whereas for La0.78Ca0.22MnO3 a stronger nonlinear increase TC(P) was observed. A significant change of the easy axis magnetization with temperature was found for La0.8Ca0.2MnO3, in the (110) plane. The above effect is almost entirely suppressed by an external pressure of 6 kbar. The ac susceptibility of La0.8Ca0.2MnO3 shows a sharp frequency dependent increase at T = 80 K, upon heating indicating a transition to cluster spin-glass formation. The results observed are discussed regarding a coexistence of ferromagnetic metallic and ferromagnetic insulating phases.",

author = "V. Markovich and I. Fita and R. Puzniak and Tsindlekht, \{M. I.\} and A. Wisniewski and G. Gorodetsky",

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T1 - Magnetization and ac susceptibility studies of the magnetic phase separation in La0.8Ca0.2MnO3 and La0.78Ca0.22MnO3 single crystals

AU - Markovich, V.

AU - Fita, I.

AU - Puzniak, R.

AU - Tsindlekht, M. I.

AU - Wisniewski, A.

AU - Gorodetsky, G.

PY - 2002/9/1

Y1 - 2002/9/1

N2 - Ferromagnetic and transport properties of La0.8Ca0.2MnO3 and La0.78Ca0.22MnO3 single crystals were studied in temperature range 4.2 KC under pressure. For La0.8Ca0.2MnO3 dTC/dP≈0.3 K/kbar, whereas for La0.78Ca0.22MnO3 a stronger nonlinear increase TC(P) was observed. A significant change of the easy axis magnetization with temperature was found for La0.8Ca0.2MnO3, in the (110) plane. The above effect is almost entirely suppressed by an external pressure of 6 kbar. The ac susceptibility of La0.8Ca0.2MnO3 shows a sharp frequency dependent increase at T = 80 K, upon heating indicating a transition to cluster spin-glass formation. The results observed are discussed regarding a coexistence of ferromagnetic metallic and ferromagnetic insulating phases.

AB - Ferromagnetic and transport properties of La0.8Ca0.2MnO3 and La0.78Ca0.22MnO3 single crystals were studied in temperature range 4.2 KC under pressure. For La0.8Ca0.2MnO3 dTC/dP≈0.3 K/kbar, whereas for La0.78Ca0.22MnO3 a stronger nonlinear increase TC(P) was observed. A significant change of the easy axis magnetization with temperature was found for La0.8Ca0.2MnO3, in the (110) plane. The above effect is almost entirely suppressed by an external pressure of 6 kbar. The ac susceptibility of La0.8Ca0.2MnO3 shows a sharp frequency dependent increase at T = 80 K, upon heating indicating a transition to cluster spin-glass formation. The results observed are discussed regarding a coexistence of ferromagnetic metallic and ferromagnetic insulating phases.

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DO - 10.1103/PhysRevB.66.094409

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VL - 66

SP - 944091

EP - 944096

JO - Physical Review B - Condensed Matter and Materials Physics

JF - Physical Review B - Condensed Matter and Materials Physics

IS - 9

M1 - 094409

ER -

Magnetization and ac susceptibility studies of the magnetic phase separation in La_0.8Ca_0.2MnO₃ and La_0.78Ca_0.22MnO₃ single crystals

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