TY - JOUR
T1 - Synthesis and magnetic properties of β-KVOF3
AU - Donakowski, Martin D.
AU - Lu, Hongcheng
AU - Gautier, Romain
AU - Saha, Rana
AU - Sundaresan, A.
AU - Poeppelmeier, Kenneth R.
PY - 2014/5
Y1 - 2014/5
N2 - The potassium vanadium oxide-fluoride phase β-KVOF3 was prepared by in-situ reduction with hydrothermal methods and characterized by single-crystal X-ray diffraction and magnetic susceptibility measurements. The compound is orthorhombic [space group Pnma, a = 7.1596(2) Å, b = 7.5392(2) Å, c = 13.0506(4) Å, Z = 8]. The material is structurally similar and isoformulaic to d1 materials of formulae AVOF3 (A + = alkali metal, ammonium, or organic cation). Magnetic susceptibility data were successfully fit with a Heisenberg chain model. In-situ reduction of V5+ to V4+ during the hydrothermal reaction conditions was observed in the presence of Br- anions. The role of bromide ions in this reduction is explained and employed to reduce a d 0 vanadium species to obtain a material with magnetic behavior.
AB - The potassium vanadium oxide-fluoride phase β-KVOF3 was prepared by in-situ reduction with hydrothermal methods and characterized by single-crystal X-ray diffraction and magnetic susceptibility measurements. The compound is orthorhombic [space group Pnma, a = 7.1596(2) Å, b = 7.5392(2) Å, c = 13.0506(4) Å, Z = 8]. The material is structurally similar and isoformulaic to d1 materials of formulae AVOF3 (A + = alkali metal, ammonium, or organic cation). Magnetic susceptibility data were successfully fit with a Heisenberg chain model. In-situ reduction of V5+ to V4+ during the hydrothermal reaction conditions was observed in the presence of Br- anions. The role of bromide ions in this reduction is explained and employed to reduce a d 0 vanadium species to obtain a material with magnetic behavior.
KW - Heisenberg chain
KW - Hydrothermal synthesis
KW - Oxide-fluoride
KW - Vanadium
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U2 - 10.1002/zaac.201300576
DO - 10.1002/zaac.201300576
M3 - Article
AN - SCOPUS:84900869658
VL - 640
SP - 1109
EP - 1114
JO - Zeitschrift fur Anorganische und Allgemeine Chemie
JF - Zeitschrift fur Anorganische und Allgemeine Chemie
SN - 0044-2313
IS - 6
ER -