Single crystal growth and structural, magnetic, and magnetoelectric properties in spin-frustrated bow-tie lattice of α-Cu5O2(SeO3)2Cl2. Issue 24 (25th October 2021)

• Record Type: Journal Article
• Authors: Kakarla, D. Chandrasekhar; Yang, Z. H.; Wu, H. C.; Kuo, T. W.; Tiwari, Ajay; Li, W.-H.; Lee, C. H.; Wang, Y.-Y.; Lin, J.-Y.; Chang, C. K.; Chen, B. H.; Wang, Chin-Wei; Lee, C. A.; Chou, Mitch M. C.; Yang, H. D.
• Is Part Of: Materials advances. Volume 2:Issue 24(2021)
• Page Start: 7939
• Page End: 7948
• Publication Date: 2021-10-25
• Subjects: 620.11
• DOI: 10.1039/d1ma00526j
• Languages: English
• ISSNs: 2633-5409

Abstract

Abstract : Growth of α-Cu5 O2 (SeO3 )2 Cl2 single crystals with unique up-up and down-down ferromagnetic spin-dimers that results in higher magnetoelectric coupling. Abstract : Single crystals of α-Cu5 O2 (SeO3 )2 Cl2 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 T N = 32 K. The spin ordering with a propagation vector q = (1/2 0 0) below T N is determined from the neutron diffraction patterns. The dielectric data reveal an anomaly near T N . Magnetic field-dependent dielectric measurements below T N = 32 K suggest a notable magnetodielectric effect with the scaling of magnetodielectric ∝ M 2 . Additionally, two more dielectric and associated specific heat anomalies are noticed above T N, collaborating with the synchrotron x-ray diffraction studies. These studies provide evidence that the bow-tie lattice of α-Cu5 O2 (SeO3 )2 Cl2 is a new magnetoelectric material.