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E. P. R.‐Studies of V 2 O 5 Single Crystals. II. Defect Centres in Molybdenum‐Doped Vanadium Pentoxide
Author(s) -
Boesman E.,
Gillis E.
Publication year - 1966
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.19660140212
Subject(s) - vanadium , pentoxide , molybdenum , orthorhombic crystal system , hyperfine structure , crystallography , doping , principal axis theorem , paramagnetism , spin (aerodynamics) , gallium , condensed matter physics , chemistry , materials science , physics , atomic physics , inorganic chemistry , crystal structure , geometry , mathematics , thermodynamics , organic chemistry
In Mo‐doped V 2 O 5 a paramagnetic defect is formed, in which the unpaired spin interacts with only one vanadium nucleus. Two non‐equivalent centres are present per unit cell. Both have the c ‐axis as the principal axis of the g ‐and hyperfine tensor, whereas one of the other axes forms an angle of ±7° with b ‐axis. The results are summarized by an orthorhombic spin‐Hamiltonian with\documentclass{article}\pagestyle{empty}\begin{document}$$ \begin{array}{*{20}c} {g_x = 1.905 \pm 0.001,} & {A_x = (158.5 \pm 0.5){\rm G},} \\ {g_y = 1.981 \pm 0.001,} & {A_y = (52.8 \pm 0.5){\rm G},} \\ {g_x = 1.977 \pm 0.001,} & {A_z = (50.8 \pm 0.5){\rm G}.} \\ \end{array} $$\end{document} Some possible models are discussed.