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

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

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

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

Department of Physics

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

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
State	Published - 1 Sep 2002

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

Cite this

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

year = "2002",

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day = "1",

language = "English",

volume = "66",

pages = "944091--944096",

journal = "Physical Review B - Condensed Matter and Materials Physics",

issn = "0163-1829",

publisher = "American Physical Society",

number = "9",

}

Magnetization and ac susceptibility studies of the magnetic phase separation in La_0.8Ca_0.2MnO₃ and La_0.78Ca_0.22MnO₃ single crystals. / Puzniak, R.; Tsindlekht, M. I.; Wisniewski, A. et al.
In: Physical Review B - Condensed Matter and Materials Physics, Vol. 66, No. 9, 094409, 01.09.2002, p. 944091-944096.

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

TY - JOUR

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

AU - Puzniak, R.

AU - Tsindlekht, M. I.

AU - Wisniewski, A.

AU - Gorodetsky, G.

AU - Markovich, V.

AU - Fita, I.

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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M3 - Article

AN - SCOPUS:84988769706

SN - 0163-1829

VL - 66

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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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