R-site cation randomness effect in the A-site ordered Y 0.5La0.5BaMn2O6 compound

Qing Qing Gao; Jing Bo Li; Guan Nan Li; Guang Hui Rao; Jun Luo; Guang Yao Liu; Jing Kui Liang

doi:10.1088/1674-1056/22/7/077502

R-site cation randomness effect in the A-site ordered Y _0.5La_0.5BaMn₂O₆ compound

Qing Qing Gao, Jing Bo Li^*, Guan Nan Li, Guang Hui Rao, Jun Luo, Guang Yao Liu, Jing Kui Liang

^*Corresponding author for this work

School of Material Science and Engineering

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

1 Citation (Scopus)

Abstract

The R/Ba-ordered and R-site mixed compound Y_0.5La _0.5BaMn₂O₆ is synthesized, in which (Y, La) and Ba are regularly arranged, while Y and La randomly occupy the R-site. Y _0.5La_0.5BaMn₂O₆ has a tetragonal unit cell with a space group of P4/mmm. A structural transition between tetragonal and orthorhombic is observed at about 325 K by X-ray powder diffraction (XRD). Thermal magnetic measurement shows the occurrence of an antiferromagnetic transition at the temperature T_N ∼ 190 K. Anomalies in magnetization, resistivity and lattice parameters observed around 340 K indicate a charge/orbital order transition accompanying the structural phase transition. The R-site randomness effect is discussed to interpret the different properties of Y_0.5La_0.5BaMn₂O ₆ between NdBaMn₂O₆ and SmBaMn ₂O₆.

Original language	English
Article number	077502
Journal	Chinese Physics B
Volume	22
Issue number	7
DOIs	https://doi.org/10.1088/1674-1056/22/7/077502
Publication status	Published - Jul 2013

Keywords

A-site ordering
X-ray powder diffraction
charge/orbital ordering
structural transition

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title = "R-site cation randomness effect in the A-site ordered Y 0.5La0.5BaMn2O6 compound",

abstract = "The R/Ba-ordered and R-site mixed compound Y0.5La 0.5BaMn2O6 is synthesized, in which (Y, La) and Ba are regularly arranged, while Y and La randomly occupy the R-site. Y 0.5La0.5BaMn2O6 has a tetragonal unit cell with a space group of P4/mmm. A structural transition between tetragonal and orthorhombic is observed at about 325 K by X-ray powder diffraction (XRD). Thermal magnetic measurement shows the occurrence of an antiferromagnetic transition at the temperature TN ∼ 190 K. Anomalies in magnetization, resistivity and lattice parameters observed around 340 K indicate a charge/orbital order transition accompanying the structural phase transition. The R-site randomness effect is discussed to interpret the different properties of Y0.5La0.5BaMn2O 6 between NdBaMn2O6 and SmBaMn 2O6.",

keywords = "A-site ordering, X-ray powder diffraction, charge/orbital ordering, structural transition",

author = "Gao, {Qing Qing} and Li, {Jing Bo} and Li, {Guan Nan} and Rao, {Guang Hui} and Jun Luo and Liu, {Guang Yao} and Liang, {Jing Kui}",

year = "2013",

month = jul,

doi = "10.1088/1674-1056/22/7/077502",

language = "English",

volume = "22",

journal = "Chinese Physics B",

issn = "1674-1056",

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TY - JOUR

T1 - R-site cation randomness effect in the A-site ordered Y 0.5La0.5BaMn2O6 compound

AU - Gao, Qing Qing

AU - Li, Jing Bo

AU - Li, Guan Nan

AU - Rao, Guang Hui

AU - Luo, Jun

AU - Liu, Guang Yao

AU - Liang, Jing Kui

PY - 2013/7

Y1 - 2013/7

N2 - The R/Ba-ordered and R-site mixed compound Y0.5La 0.5BaMn2O6 is synthesized, in which (Y, La) and Ba are regularly arranged, while Y and La randomly occupy the R-site. Y 0.5La0.5BaMn2O6 has a tetragonal unit cell with a space group of P4/mmm. A structural transition between tetragonal and orthorhombic is observed at about 325 K by X-ray powder diffraction (XRD). Thermal magnetic measurement shows the occurrence of an antiferromagnetic transition at the temperature TN ∼ 190 K. Anomalies in magnetization, resistivity and lattice parameters observed around 340 K indicate a charge/orbital order transition accompanying the structural phase transition. The R-site randomness effect is discussed to interpret the different properties of Y0.5La0.5BaMn2O 6 between NdBaMn2O6 and SmBaMn 2O6.

AB - The R/Ba-ordered and R-site mixed compound Y0.5La 0.5BaMn2O6 is synthesized, in which (Y, La) and Ba are regularly arranged, while Y and La randomly occupy the R-site. Y 0.5La0.5BaMn2O6 has a tetragonal unit cell with a space group of P4/mmm. A structural transition between tetragonal and orthorhombic is observed at about 325 K by X-ray powder diffraction (XRD). Thermal magnetic measurement shows the occurrence of an antiferromagnetic transition at the temperature TN ∼ 190 K. Anomalies in magnetization, resistivity and lattice parameters observed around 340 K indicate a charge/orbital order transition accompanying the structural phase transition. The R-site randomness effect is discussed to interpret the different properties of Y0.5La0.5BaMn2O 6 between NdBaMn2O6 and SmBaMn 2O6.

KW - A-site ordering

KW - X-ray powder diffraction

KW - charge/orbital ordering

KW - structural transition

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U2 - 10.1088/1674-1056/22/7/077502

DO - 10.1088/1674-1056/22/7/077502

M3 - Article

AN - SCOPUS:84880555249

SN - 1674-1056

VL - 22

JO - Chinese Physics B

JF - Chinese Physics B

IS - 7

M1 - 077502

ER -

R-site cation randomness effect in the A-site ordered Y _0.5La_0.5BaMn₂O₆ compound

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Keywords

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