Single Crystal Growth and Magnetic Properties of BaCuO₂.

Authors

Han-Shu Xu, Xin Zhang, Xinyu Yin, Wenjun Chu, Xingyi Cai, Jiaping Hu, Wenqi Zhan, Yao Zhou, Yuyan Han

Published in

Inorganic chemistry. Jul 17, 2026. Epub Jul 17, 2026.

Abstract

High-quality BaCuO₂ single crystals were successfully grown by a high-temperature BaCl₂·2H₂O flux method under an optimal slow-cooling condition of 1 °C/h within the temperature window of 980-800 °C. Structural characterizations confirm that BaCuO₂ crystallizes in the cubic Im-3m structure with excellent crystallinity, homogeneous elemental distribution, and negligible oxygen-vacancy concentration. Magnetic susceptibility, magnetization, and specific-heat measurements consistently reveal an antiferromagnetic transition near T_N = 11 K accompanied by pronounced short-range magnetic correlations. Although the Curie-Weiss fitting yields a positive Weiss temperature, the low-temperature thermodynamic response establishes an antiferromagnetic ground state arising from competing magnetic exchange interactions within the Cu-O cluster network. Importantly, the present single-crystal study demonstrates that BaCuO₂ is intrinsically an insulating oxide rather than a semiconducting or superconductivity-related material, highlighting the crucial importance of high-quality single crystals for distinguishing intrinsic physical properties from impurity-driven effects in complex cuprate systems.

PMID:
42467861
Bibliographic data and abstract were imported from PubMed on 18 Jul 2026.

Read full publication at:
Please sign in to see all details.

Stats

1-terrible, 9-excellent. How would you rate this publication? Sign in in to submit your rating.

Post a comment

You need to be signed in to post comments. You can sign in here.

Comments

There are no comments yet.