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EPR of Vanadium(IV) in Lead Silicate Glass
Author(s) -
Momo F.,
Sotgiu A.,
Baiocchi E.,
Montenero A.
Publication year - 1981
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1981.tb10311.x
Subject(s) - electron paramagnetic resonance , vanadium , octahedron , silicate , doping , ion , mineralogy , materials science , chemistry , analytical chemistry (journal) , crystallography , inorganic chemistry , nuclear magnetic resonance , crystal structure , physics , optoelectronics , organic chemistry , chromatography
EPR spectra of lead silicate glasses doped with small amounts of V 2 O 5 were studied at −150°C to room temperature. Only the glasses with the higher SiO 2 contents produced EPR signals. The spin Hamiltonian parameters are characteristic of the V(IV) species in axial symmetry. The values of g, g ⊥, A, and B indicate that V(IV) is present as VO 2plus; in a tetragonally distorted octahedral site. This ion probably does not enter the SiO 2 network but rather behaves as a modifier cation.