title: Vanadium octacyanoniobate-based magnet with a Curie temperature of 138 K.
abstract: In this work, we prepared a three-dimensional vanadium octacyanoniobate-based magnet, K(0.10)V(II)(0.54)V(III)(1.24)[Nb(IV)(CN)(8)].(SO(4))(0.45).6.8H(2)O. This compound exhibits ferrimagnetism with a Curie temperature of 138 K, in which the sublattice magnetizations of V(II) (S = (3)/(2)) and V(III) (S = 1) are antiparallelly ordered to that of Nb(IV) (S = (1)/(2)). The estimated superexchange interaction constants of V(II)-Nb(IV) and V(III)-Nb(IV) are -51 and -25 cm(-1), respectively.
authors.affiliation: Department of Chemistry, School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan.
authors.forename: Wataru
authors.initials: W
authors.lastname: Kosaka
authors.forename: Kenta
authors.initials: K
authors.lastname: Imoto
authors.forename: Yoshihide
authors.initials: Y
authors.lastname: Tsunobuchi
authors.forename: Shin-ichi
authors.initials: S
authors.lastname: Ohkoshi
mesh_terms: D003486:Cyanides / Q000138:chemical synthesis / Q000737:chemistry*; D008280:Magnetics; D009556:Niobium / Q000737:chemistry; D011188:Potassium / Q000737:chemistry; D013696:Temperature; D017968:Vanadium Compounds / Q000138:chemical synthesis / Q000737:chemistry*
chemical_list: D003486:Cyanides; D017968:Vanadium Compounds; D009556:Niobium; D011188:Potassium