title: Magnetic, structural, and thermal properties of CoV₂O₄.
abstract: In this paper, we investigate the electric, magnetic, structural, and thermal properties of spinel CoV(2)O(4). The temperature dependence of magnetization shows that, in addition to the paramagnetic-to-ferrimagnetic transition at T(C) = 142 K, two magnetic anomalies exist at 100 K, T(1) = 59 K. Consistent with the anomalies, the thermal conductivity presents two valleys at 100 K and T(1). At the temperature T(1), the heat capacity shows one peak, which cannot be attributed to the structural transition as revealed by the x-ray diffraction patterns for CoV(2)O(4). Below the transition temperature T(1), the ac susceptibility displays the characteristics of a glass. The series of phenomena at T(1) and the orbital state on V(3+) sites are discussed.
authors.affiliation: High Magnetic Field Laboratory, Chinese Academy of Sciences and University of Science and Technology of China, Hefei 230026, People's Republic of China.
authors.forename: Yuanjie
authors.initials: Y
authors.lastname: Huang
authors.forename: Zhaorong
authors.initials: Z
authors.lastname: Yang
authors.forename: Yuheng
authors.initials: Y
authors.lastname: Zhang
mesh_terms: D000465:Algorithms; D002627:Chemistry, Physical / Q000379:methods*; D003035:Cobalt / Q000737:chemistry*; D003460:Crystallization; D006358:Hot Temperature; D008280:Magnetics; D015233:Models, Statistical; D008968:Molecular Conformation; D010087:Oxides / Q000737:chemistry*; D013696:Temperature; D014639:Vanadium / Q000737:chemistry*; D014961:X-Ray Diffraction
chemical_list: D010087:Oxides; D014639:Vanadium; D003035:Cobalt