Journal
MATERIALS ADVANCES
Volume 2, Issue 24, Pages 7939-7948Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/d1ma00526j
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Funding
- Ministry of Science and Technology, Taiwan [MOST 109-2112-M-110-019, MOST 108-2112-M-110-014-MY2, MOST 107-2119-M-009, MOST 107-2917-I-564-008]
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Single crystals of alpha-Cu5O2(SeO3)(2)Cl-2 were prepared successfully and studied for their structural, magnetic, thermal, and dielectric properties. The presence of magnetodielectric effect and long-range antiferromagnetic transition were observed.
Single crystals of alpha-Cu5O2(SeO3)(2)Cl-2 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 proportional to 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 alpha-Cu5O2(SeO3)(2)Cl-2 is a new magnetoelectric material.
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