B-site deficiencies in A-site-ordered perovskite LaCu3Pt 3.75O12

Mikiko Ochi; Ikuya Yamada; Kenya Ohgushi; Yoshihiro Kusano; Masaichiro Mizumaki; Ryoji Takahashi; Shunsuke Yagi; Norimasa Nishiyama; Toru Inoue; Tetsuo Irifune

doi:10.1021/ic302809v

B-site deficiencies in A-site-ordered perovskite LaCu₃Pt _3.75O₁₂

Mikiko Ochi, Ikuya Yamada, Kenya Ohgushi, Yoshihiro Kusano, Masaichiro Mizumaki, Ryoji Takahashi, Shunsuke Yagi, Norimasa Nishiyama, Toru Inoue, Tetsuo Irifune

SCI - Physics

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

11 Citations (Scopus)

Abstract

An A-site-ordered perovskite LaCu₃Pt_3.75O ₁₂ was synthesized by replacing Ca²⁺ with La³⁺ in a cubic quadruple AA′₃B₄O₁₂-type perovskite CaCu₃Pt₄O₁₂ under high-pressure and high-temperature of 15 GPa and 1100 C. In LaCu₃Pt _3.75O₁₂, 1/16 of B-site cations are vacant to achieve charge balance. The B-site deficiencies were evidenced by crystal structure refinement using synchrotron X-ray powder diffraction, hard X-ray photoemission spectroscopy, and soft X-ray absorption spectroscopy, leading to the ionic model La³⁺Cu²⁺₃Pt⁴⁺_3.75O ^2-₁₂. Magnetic susceptibility data for this compound indicated a spin-glass-like behavior below T_g = 3.7 K, which is attributed to disturbance of the antiferromagnetic superexchange interaction by the B-site deficiencies.

Original language	English
Pages (from-to)	3985-3989
Number of pages	5
Journal	Inorganic Chemistry
Volume	52
Issue number	7
DOIs	https://doi.org/10.1021/ic302809v
Publication status	Published - 2013 Apr 1

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@article{599638a7f981458cb2ee54835722f01c,

title = "B-site deficiencies in A-site-ordered perovskite LaCu3Pt 3.75O12",

abstract = "An A-site-ordered perovskite LaCu3Pt3.75O 12 was synthesized by replacing Ca2+ with La3+ in a cubic quadruple AA′3B4O12-type perovskite CaCu3Pt4O12 under high-pressure and high-temperature of 15 GPa and 1100 C. In LaCu3Pt 3.75O12, 1/16 of B-site cations are vacant to achieve charge balance. The B-site deficiencies were evidenced by crystal structure refinement using synchrotron X-ray powder diffraction, hard X-ray photoemission spectroscopy, and soft X-ray absorption spectroscopy, leading to the ionic model La3+Cu2+3Pt4+3.75O 2-12. Magnetic susceptibility data for this compound indicated a spin-glass-like behavior below Tg = 3.7 K, which is attributed to disturbance of the antiferromagnetic superexchange interaction by the B-site deficiencies.",

author = "Mikiko Ochi and Ikuya Yamada and Kenya Ohgushi and Yoshihiro Kusano and Masaichiro Mizumaki and Ryoji Takahashi and Shunsuke Yagi and Norimasa Nishiyama and Toru Inoue and Tetsuo Irifune",

year = "2013",

month = apr,

day = "1",

doi = "10.1021/ic302809v",

language = "English",

volume = "52",

pages = "3985--3989",

journal = "Inorganic Chemistry",

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publisher = "American Chemical Society",

number = "7",

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TY - JOUR

T1 - B-site deficiencies in A-site-ordered perovskite LaCu3Pt 3.75O12

AU - Ochi, Mikiko

AU - Yamada, Ikuya

AU - Ohgushi, Kenya

AU - Kusano, Yoshihiro

AU - Mizumaki, Masaichiro

AU - Takahashi, Ryoji

AU - Yagi, Shunsuke

AU - Nishiyama, Norimasa

AU - Inoue, Toru

AU - Irifune, Tetsuo

PY - 2013/4/1

Y1 - 2013/4/1

N2 - An A-site-ordered perovskite LaCu3Pt3.75O 12 was synthesized by replacing Ca2+ with La3+ in a cubic quadruple AA′3B4O12-type perovskite CaCu3Pt4O12 under high-pressure and high-temperature of 15 GPa and 1100 C. In LaCu3Pt 3.75O12, 1/16 of B-site cations are vacant to achieve charge balance. The B-site deficiencies were evidenced by crystal structure refinement using synchrotron X-ray powder diffraction, hard X-ray photoemission spectroscopy, and soft X-ray absorption spectroscopy, leading to the ionic model La3+Cu2+3Pt4+3.75O 2-12. Magnetic susceptibility data for this compound indicated a spin-glass-like behavior below Tg = 3.7 K, which is attributed to disturbance of the antiferromagnetic superexchange interaction by the B-site deficiencies.

AB - An A-site-ordered perovskite LaCu3Pt3.75O 12 was synthesized by replacing Ca2+ with La3+ in a cubic quadruple AA′3B4O12-type perovskite CaCu3Pt4O12 under high-pressure and high-temperature of 15 GPa and 1100 C. In LaCu3Pt 3.75O12, 1/16 of B-site cations are vacant to achieve charge balance. The B-site deficiencies were evidenced by crystal structure refinement using synchrotron X-ray powder diffraction, hard X-ray photoemission spectroscopy, and soft X-ray absorption spectroscopy, leading to the ionic model La3+Cu2+3Pt4+3.75O 2-12. Magnetic susceptibility data for this compound indicated a spin-glass-like behavior below Tg = 3.7 K, which is attributed to disturbance of the antiferromagnetic superexchange interaction by the B-site deficiencies.

UR - http://www.scopus.com/inward/record.url?scp=84875789262&partnerID=8YFLogxK

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U2 - 10.1021/ic302809v

DO - 10.1021/ic302809v

M3 - Article

AN - SCOPUS:84875789262

SN - 0020-1669

VL - 52

SP - 3985

EP - 3989

JO - Inorganic Chemistry

JF - Inorganic Chemistry

IS - 7

ER -

B-site deficiencies in A-site-ordered perovskite LaCu₃Pt _3.75O₁₂

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