Transport and magnetic properties of Pr1-xCaxMnO3 epitaxial films grown on LaAlO3 substrates

A. Maniwa; K. Okano; I. Ohkubo; H. Kumigashira; M. Oshima; M. Lippmaa; M. Kawasaki; H. Koinuma

doi:10.1016/j.jmmm.2006.10.817

Transport and magnetic properties of Pr_1-xCa_xMnO₃ epitaxial films grown on LaAlO₃ substrates

A. Maniwa, K. Okano, I. Ohkubo, H. Kumigashira, M. Oshima, M. Lippmaa, M. Kawasaki, H. Koinuma

Research output: Contribution to journal › Article

7 Citations (Scopus)

Abstract

We have measured physical properties of Pr_1-xCa_xMnO₃ (PCMO) epitaxial thin films with different hole concentrations (x=0.2, 0.3, 0.4, and 0.5) grown on LaAlO₃ (1 0 0) substrates by laser molecular beam epitaxy technique. The temperature dependence of the resistivity shows insulating behavior in all temperature regions and the resistivity itself monotonously decreases as x increases. This insulating nature of PCMO films is similar to that of bulk PCMO crystals. However, we did not find any indication of the resistivity anomaly associated with the onset of charge ordering irrespective of x. These results suggest that the compressive strain strongly suppresses charge-ordered states in PCMO.

Original language	English
Pages (from-to)	2237-2238
Number of pages	2
Journal	Journal of Magnetism and Magnetic Materials
Volume	310
Issue number	2 SUPPL. PART 3
DOIs	https://doi.org/10.1016/j.jmmm.2006.10.817
Publication status	Published - 2007 Mar 1
Externally published	Yes

Keywords

Charge order
Epitaxial strain
Laser MBE
PrCaMnO
Thin film

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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Maniwa, A., Okano, K., Ohkubo, I., Kumigashira, H., Oshima, M., Lippmaa, M., Kawasaki, M., & Koinuma, H. (2007). Transport and magnetic properties of Pr_1-xCa_xMnO₃ epitaxial films grown on LaAlO₃ substrates. Journal of Magnetism and Magnetic Materials, 310(2 SUPPL. PART 3), 2237-2238. https://doi.org/10.1016/j.jmmm.2006.10.817

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title = "Transport and magnetic properties of Pr1-xCaxMnO3 epitaxial films grown on LaAlO3 substrates",

abstract = "We have measured physical properties of Pr1-xCaxMnO3 (PCMO) epitaxial thin films with different hole concentrations (x=0.2, 0.3, 0.4, and 0.5) grown on LaAlO3 (1 0 0) substrates by laser molecular beam epitaxy technique. The temperature dependence of the resistivity shows insulating behavior in all temperature regions and the resistivity itself monotonously decreases as x increases. This insulating nature of PCMO films is similar to that of bulk PCMO crystals. However, we did not find any indication of the resistivity anomaly associated with the onset of charge ordering irrespective of x. These results suggest that the compressive strain strongly suppresses charge-ordered states in PCMO.",

keywords = "Charge order, Epitaxial strain, Laser MBE, PrCaMnO, Thin film",

author = "A. Maniwa and K. Okano and I. Ohkubo and H. Kumigashira and M. Oshima and M. Lippmaa and M. Kawasaki and H. Koinuma",

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T1 - Transport and magnetic properties of Pr1-xCaxMnO3 epitaxial films grown on LaAlO3 substrates

AU - Maniwa, A.

AU - Okano, K.

AU - Ohkubo, I.

AU - Kumigashira, H.

AU - Oshima, M.

AU - Lippmaa, M.

AU - Kawasaki, M.

AU - Koinuma, H.

PY - 2007/3/1

Y1 - 2007/3/1

N2 - We have measured physical properties of Pr1-xCaxMnO3 (PCMO) epitaxial thin films with different hole concentrations (x=0.2, 0.3, 0.4, and 0.5) grown on LaAlO3 (1 0 0) substrates by laser molecular beam epitaxy technique. The temperature dependence of the resistivity shows insulating behavior in all temperature regions and the resistivity itself monotonously decreases as x increases. This insulating nature of PCMO films is similar to that of bulk PCMO crystals. However, we did not find any indication of the resistivity anomaly associated with the onset of charge ordering irrespective of x. These results suggest that the compressive strain strongly suppresses charge-ordered states in PCMO.

AB - We have measured physical properties of Pr1-xCaxMnO3 (PCMO) epitaxial thin films with different hole concentrations (x=0.2, 0.3, 0.4, and 0.5) grown on LaAlO3 (1 0 0) substrates by laser molecular beam epitaxy technique. The temperature dependence of the resistivity shows insulating behavior in all temperature regions and the resistivity itself monotonously decreases as x increases. This insulating nature of PCMO films is similar to that of bulk PCMO crystals. However, we did not find any indication of the resistivity anomaly associated with the onset of charge ordering irrespective of x. These results suggest that the compressive strain strongly suppresses charge-ordered states in PCMO.

KW - Charge order

KW - Epitaxial strain

KW - Laser MBE

KW - PrCaMnO

KW - Thin film

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