Single crystal growth and structural, magnetic, and magnetoelectric properties in spin-frustrated bow-tie lattice of α-Cu5O2(SeO3)2Cl2

D. Chandrasekhar Kakarla*, Z. H. Yang, H. C. Wu, T. W. Kuo, Ajay Tiwari, W. H. Li, C. H. Lee, Y. Y. Wang, J. Y. Lin, C. K. Chang, B. H. Chen, Chin Wei Wang, C. A. Lee, Mitch M.C. Chou, H. D. Yang

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

Single crystals of α-Cu5O2(SeO3)2Cl2 are successfully prepared by the chemical vapor transport method, and their structural, magnetic, thermal, and dielectric properties are investigated as a function of temperature and magnetic field. Magnetization and specific heat measurements indicate a long-range antiferromagnetic transition at TN = 32 K. The spin ordering with a propagation vector q = (1/2 0 0) below TN is determined from the neutron diffraction patterns. The dielectric data reveal an anomaly near TN. Magnetic field-dependent dielectric measurements below TN = 32 K suggest a notable magnetodielectric effect with the scaling of magnetodielectric ∝ M2. Additionally, two more dielectric and associated specific heat anomalies are noticed above TN, collaborating with the synchrotron x-ray diffraction studies. These studies provide evidence that the bow-tie lattice of α-Cu5O2(SeO3)2Cl2 is a new magnetoelectric material.

Original languageEnglish
Pages (from-to)7939-7948
Number of pages10
JournalMaterials Advances
Volume2
Issue number24
DOIs
StatePublished - 21 Dec 2021

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