Enhanced Jahn-Teller distortion in the orthorhombic phase of La 0.15 Ca0.85 MnO3 and Y0.15 Ca 0.85 MnO3

P. Tong; Bongju Kim; Daeyoung Kwon; Bog G. Kim; G. Y. Ahn; J. M.S. Park; Sung Baek Kim; S. W. Cheong

doi:10.1063/1.3035249

Enhanced Jahn-Teller distortion in the orthorhombic phase of La _0.15 Ca_0.85 MnO₃ and Y_0.15 Ca _0.85 MnO₃

P. Tong, Bongju Kim, Daeyoung Kwon, Bog G. Kim, G. Y. Ahn, J. M.S. Park, Sung Baek Kim, S. W. Cheong

School of Arts and Sciences, Physics & Astronomy

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

13 Scopus citations

Abstract

We report the results of neutron powder diffraction experiments on La _0.15 Ca_0.85 MnO₃ and Y_0.15 Ca _0.85 MnO₃. After an incomplete orthorhombic-monoclinic phase transition, the residual orthorhombic phase undergoes an enhancement of Jahn-Teller distortion of MnO6 octahedra. The degree of Jahn-Teller distortion is strongly influenced by coexisting monoclinic phase. Furthermore, ferromagnetism is closely associated with this Jahn-Teller distortion, rather than the buckling effect in the orthorhombic phase. Despite the low concentration of Jahn-Teller active Mn³⁺ ions, our result indicates an important role of Jahn-Teller effect on physical properties of the lightly electron-doped manganites.

Original language	English (US)
Article number	202504
Journal	Applied Physics Letters
Volume	93
Issue number	20
DOIs	https://doi.org/10.1063/1.3035249
State	Published - 2008

All Science Journal Classification (ASJC) codes

Physics and Astronomy (miscellaneous)

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10.1063/1.3035249

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@article{17e19be2647e4d9ba4cdb7415b47f2c7,

title = "Enhanced Jahn-Teller distortion in the orthorhombic phase of La 0.15 Ca0.85 MnO3 and Y0.15 Ca 0.85 MnO3",

abstract = "We report the results of neutron powder diffraction experiments on La 0.15 Ca0.85 MnO3 and Y0.15 Ca 0.85 MnO3. After an incomplete orthorhombic-monoclinic phase transition, the residual orthorhombic phase undergoes an enhancement of Jahn-Teller distortion of MnO6 octahedra. The degree of Jahn-Teller distortion is strongly influenced by coexisting monoclinic phase. Furthermore, ferromagnetism is closely associated with this Jahn-Teller distortion, rather than the buckling effect in the orthorhombic phase. Despite the low concentration of Jahn-Teller active Mn3+ ions, our result indicates an important role of Jahn-Teller effect on physical properties of the lightly electron-doped manganites.",

author = "P. Tong and Bongju Kim and Daeyoung Kwon and Kim, {Bog G.} and Ahn, {G. Y.} and Park, {J. M.S.} and Kim, {Sung Baek} and Cheong, {S. W.}",

note = "Funding Information: This work was supported by National Core Research Center Program of Pusan National University [Grant No. R15-2006-02-01002-0(2008)] and by the Korea Research Foundation (Grant Nos. KRF-2006-005-J02803 and KRF-2007-313-C00247). Work at HANARO is supported by the Neutron Science 21 project of Korea Atomic Energy Research Institute. ",

year = "2008",

doi = "10.1063/1.3035249",

language = "English (US)",

volume = "93",

journal = "Applied Physics Letters",

issn = "0003-6951",

publisher = "American Institute of Physics Publising LLC",

number = "20",

}

TY - JOUR

T1 - Enhanced Jahn-Teller distortion in the orthorhombic phase of La 0.15 Ca0.85 MnO3 and Y0.15 Ca 0.85 MnO3

AU - Tong, P.

AU - Kim, Bongju

AU - Kwon, Daeyoung

AU - Kim, Bog G.

AU - Ahn, G. Y.

AU - Park, J. M.S.

AU - Kim, Sung Baek

AU - Cheong, S. W.

N1 - Funding Information: This work was supported by National Core Research Center Program of Pusan National University [Grant No. R15-2006-02-01002-0(2008)] and by the Korea Research Foundation (Grant Nos. KRF-2006-005-J02803 and KRF-2007-313-C00247). Work at HANARO is supported by the Neutron Science 21 project of Korea Atomic Energy Research Institute.

PY - 2008

Y1 - 2008

N2 - We report the results of neutron powder diffraction experiments on La 0.15 Ca0.85 MnO3 and Y0.15 Ca 0.85 MnO3. After an incomplete orthorhombic-monoclinic phase transition, the residual orthorhombic phase undergoes an enhancement of Jahn-Teller distortion of MnO6 octahedra. The degree of Jahn-Teller distortion is strongly influenced by coexisting monoclinic phase. Furthermore, ferromagnetism is closely associated with this Jahn-Teller distortion, rather than the buckling effect in the orthorhombic phase. Despite the low concentration of Jahn-Teller active Mn3+ ions, our result indicates an important role of Jahn-Teller effect on physical properties of the lightly electron-doped manganites.

AB - We report the results of neutron powder diffraction experiments on La 0.15 Ca0.85 MnO3 and Y0.15 Ca 0.85 MnO3. After an incomplete orthorhombic-monoclinic phase transition, the residual orthorhombic phase undergoes an enhancement of Jahn-Teller distortion of MnO6 octahedra. The degree of Jahn-Teller distortion is strongly influenced by coexisting monoclinic phase. Furthermore, ferromagnetism is closely associated with this Jahn-Teller distortion, rather than the buckling effect in the orthorhombic phase. Despite the low concentration of Jahn-Teller active Mn3+ ions, our result indicates an important role of Jahn-Teller effect on physical properties of the lightly electron-doped manganites.

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DO - 10.1063/1.3035249

M3 - Article

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SN - 0003-6951

VL - 93

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 20

M1 - 202504

ER -

Enhanced Jahn-Teller distortion in the orthorhombic phase of La _0.15 Ca_0.85 MnO₃ and Y_0.15 Ca _0.85 MnO₃

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