Structural properties and charge ordered states in RMnO3 (R = La, Pr, Nd, Ca, Sr) and (La, Sr)2NiO4

J. Q. Li; H. Y. Chen; H. R. Zhang; H. C. Yu; Y. G. Shi; L. B. Liu; H. F. Tian; Y. Zhu; J. M. Tranquada

doi:10.1016/j.micron.2004.01.006

Structural properties and charge ordered states in RMnO₃ (R = La, Pr, Nd, Ca, Sr) and (La, Sr)₂NiO₄

J. Q. Li^*
, H. Y. Chen
, H. R. Zhang
, H. C. Yu
, Y. G. Shi
, L. B. Liu
, H. F. Tian
, Y. Zhu
, J. M. Tranquada

^*Corresponding author for this work

CAS - Institute of Physics
Brookhaven National Laboratory

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

5 Scopus citations

Abstract

Structural distortions arising from the condensations of two essential kinds of phonon modes: the triply degenerate rotational modes (φ_x,φ_y,φ_z) of MnO₆ and the doubly degenerate Jahn-Teller active modes (Q₁,Q₂) have been systematically investigated in the perovskite manganites. Microstructural features associated with certain types of distortions have been observed by transmission electron microscopy (TEM). In RMnO₃ and La(Sr)₂NiO₄, we characterize the local structure, charge ordered states and orbital ordering by means of low-temperature TEM. We present direct evidence that the stripe modulation in La(Sr)₂NiO₄ is indeed one-dimensional within each NiO₂ plane. Several typical kinds of defect structures, including antiphase boundaries and the 90°-twin domains, appear commonly in the charge-ordered states.

Original language	English
Pages (from-to)	419-424
Number of pages	6
Journal	Micron
Volume	35
Issue number	6
DOIs	https://doi.org/10.1016/j.micron.2004.01.006
State	Published - Aug 2004
Externally published	Yes

Keywords

Charge ordering
Charge stripe
Phase transition

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10.1016/j.micron.2004.01.006

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@article{d661b23d053445e695e98787a90feaa1,

title = "Structural properties and charge ordered states in RMnO3 (R = La, Pr, Nd, Ca, Sr) and (La, Sr)2NiO4",

abstract = "Structural distortions arising from the condensations of two essential kinds of phonon modes: the triply degenerate rotational modes (φx,φy,φz) of MnO6 and the doubly degenerate Jahn-Teller active modes (Q1,Q2) have been systematically investigated in the perovskite manganites. Microstructural features associated with certain types of distortions have been observed by transmission electron microscopy (TEM). In RMnO3 and La(Sr)2NiO4, we characterize the local structure, charge ordered states and orbital ordering by means of low-temperature TEM. We present direct evidence that the stripe modulation in La(Sr)2NiO4 is indeed one-dimensional within each NiO2 plane. Several typical kinds of defect structures, including antiphase boundaries and the 90°-twin domains, appear commonly in the charge-ordered states.",

keywords = "Charge ordering, Charge stripe, Phase transition",

author = "Li, \{J. Q.\} and Chen, \{H. Y.\} and Zhang, \{H. R.\} and Yu, \{H. C.\} and Shi, \{Y. G.\} and Liu, \{L. B.\} and Tian, \{H. F.\} and Y. Zhu and Tranquada, \{J. M.\}",

year = "2004",

month = aug,

doi = "10.1016/j.micron.2004.01.006",

language = "英语",

volume = "35",

pages = "419--424",

journal = "Micron",

issn = "0968-4328",

publisher = "Elsevier Ltd",

number = "6",

}

TY - JOUR

T1 - Structural properties and charge ordered states in RMnO3 (R = La, Pr, Nd, Ca, Sr) and (La, Sr)2NiO4

AU - Li, J. Q.

AU - Chen, H. Y.

AU - Zhang, H. R.

AU - Yu, H. C.

AU - Shi, Y. G.

AU - Liu, L. B.

AU - Tian, H. F.

AU - Zhu, Y.

AU - Tranquada, J. M.

PY - 2004/8

Y1 - 2004/8

N2 - Structural distortions arising from the condensations of two essential kinds of phonon modes: the triply degenerate rotational modes (φx,φy,φz) of MnO6 and the doubly degenerate Jahn-Teller active modes (Q1,Q2) have been systematically investigated in the perovskite manganites. Microstructural features associated with certain types of distortions have been observed by transmission electron microscopy (TEM). In RMnO3 and La(Sr)2NiO4, we characterize the local structure, charge ordered states and orbital ordering by means of low-temperature TEM. We present direct evidence that the stripe modulation in La(Sr)2NiO4 is indeed one-dimensional within each NiO2 plane. Several typical kinds of defect structures, including antiphase boundaries and the 90°-twin domains, appear commonly in the charge-ordered states.

AB - Structural distortions arising from the condensations of two essential kinds of phonon modes: the triply degenerate rotational modes (φx,φy,φz) of MnO6 and the doubly degenerate Jahn-Teller active modes (Q1,Q2) have been systematically investigated in the perovskite manganites. Microstructural features associated with certain types of distortions have been observed by transmission electron microscopy (TEM). In RMnO3 and La(Sr)2NiO4, we characterize the local structure, charge ordered states and orbital ordering by means of low-temperature TEM. We present direct evidence that the stripe modulation in La(Sr)2NiO4 is indeed one-dimensional within each NiO2 plane. Several typical kinds of defect structures, including antiphase boundaries and the 90°-twin domains, appear commonly in the charge-ordered states.

KW - Charge ordering

KW - Charge stripe

KW - Phase transition

UR - https://www.scopus.com/pages/publications/2342462430

U2 - 10.1016/j.micron.2004.01.006

DO - 10.1016/j.micron.2004.01.006

M3 - 文章

AN - SCOPUS:2342462430

SN - 0968-4328

VL - 35

SP - 419

EP - 424

JO - Micron

JF - Micron

IS - 6

ER -

Structural properties and charge ordered states in RMnO₃ (R = La, Pr, Nd, Ca, Sr) and (La, Sr)₂NiO₄

Abstract

Keywords

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