Spin-1/2 quantum antiferromagnetic chains with adjustable superexchange interactions found in BaCu2(Si1-xGex) 2O7

Takahiro Yamada; Mikio Takano; Zenji Hiroi

doi:10.1016/S0925-8388(00)01315-3

Spin-1/2 quantum antiferromagnetic chains with adjustable superexchange interactions found in BaCu₂(Si_1-xGe_x) ₂O₇

Takahiro Yamada, Mikio Takano, Zenji Hiroi

IMRAM - Division of Inorganic Material Research

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

10 Citations (Scopus)

Abstract

Synthesis, structure, and magnetic properties of a novel one-dimensional spin-1/2 quantum antiferromagnetic (AF) system BaCu₂(Si_1-xGe_x)₂ O₇ (0≤x≤1) are reported. Contained in this system are corrugated CuO₃ chains made of corner-sharing CuO₄ squares, with the dominant exchange interactions being found to change almost linearly with the composition between 290 K (x = 0) and 580 K (x = 1). Anomalies in susceptibility and specific heat, indicative of the occurrence of a long-range AF ordering, are observed at 8.9 K (x = 0) and 8.6 K (x = 1).

Original language	English
Pages (from-to)	171-176
Number of pages	6
Journal	Journal of Alloys and Compounds
Volume	317-318
DOIs	https://doi.org/10.1016/S0925-8388(00)01315-3
Publication status	Published - 2001 Apr 12

Keywords

CuO chain
Cupric oxide
Quantum spin system

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10.1016/S0925-8388(00)01315-3

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title = "Spin-1/2 quantum antiferromagnetic chains with adjustable superexchange interactions found in BaCu2(Si1-xGex) 2O7",

abstract = "Synthesis, structure, and magnetic properties of a novel one-dimensional spin-1/2 quantum antiferromagnetic (AF) system BaCu2(Si1-xGex)2 O7 (0≤x≤1) are reported. Contained in this system are corrugated CuO3 chains made of corner-sharing CuO4 squares, with the dominant exchange interactions being found to change almost linearly with the composition between 290 K (x = 0) and 580 K (x = 1). Anomalies in susceptibility and specific heat, indicative of the occurrence of a long-range AF ordering, are observed at 8.9 K (x = 0) and 8.6 K (x = 1).",

keywords = "CuO chain, Cupric oxide, Quantum spin system",

author = "Takahiro Yamada and Mikio Takano and Zenji Hiroi",

note = "Funding Information: This work was supported, in part, by CREST (Core Research for Evolutional Science and Technology) of Japan Science and Technology Corporation.",

year = "2001",

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doi = "10.1016/S0925-8388(00)01315-3",

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T1 - Spin-1/2 quantum antiferromagnetic chains with adjustable superexchange interactions found in BaCu2(Si1-xGex) 2O7

AU - Yamada, Takahiro

AU - Takano, Mikio

AU - Hiroi, Zenji

N1 - Funding Information: This work was supported, in part, by CREST (Core Research for Evolutional Science and Technology) of Japan Science and Technology Corporation.

PY - 2001/4/12

Y1 - 2001/4/12

N2 - Synthesis, structure, and magnetic properties of a novel one-dimensional spin-1/2 quantum antiferromagnetic (AF) system BaCu2(Si1-xGex)2 O7 (0≤x≤1) are reported. Contained in this system are corrugated CuO3 chains made of corner-sharing CuO4 squares, with the dominant exchange interactions being found to change almost linearly with the composition between 290 K (x = 0) and 580 K (x = 1). Anomalies in susceptibility and specific heat, indicative of the occurrence of a long-range AF ordering, are observed at 8.9 K (x = 0) and 8.6 K (x = 1).

AB - Synthesis, structure, and magnetic properties of a novel one-dimensional spin-1/2 quantum antiferromagnetic (AF) system BaCu2(Si1-xGex)2 O7 (0≤x≤1) are reported. Contained in this system are corrugated CuO3 chains made of corner-sharing CuO4 squares, with the dominant exchange interactions being found to change almost linearly with the composition between 290 K (x = 0) and 580 K (x = 1). Anomalies in susceptibility and specific heat, indicative of the occurrence of a long-range AF ordering, are observed at 8.9 K (x = 0) and 8.6 K (x = 1).

KW - CuO chain

KW - Cupric oxide

KW - Quantum spin system

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JF - Journal of Alloys and Compounds

ER -

Spin-1/2 quantum antiferromagnetic chains with adjustable superexchange interactions found in BaCu₂(Si_1-xGe_x) ₂O₇

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Keywords

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