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Mixed Valence State and Metal–Non‐Metal Transition of KCP
Author(s) -
Nagasawa H.
Publication year - 1982
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.2221090235
Subject(s) - valence (chemistry) , ion , excited state , x ray photoelectron spectroscopy , electron paramagnetic resonance , materials science , ground state , ionic bonding , platinum , metal , atomic physics , chemistry , nuclear magnetic resonance , physics , metallurgy , biochemistry , organic chemistry , catalysis
Abstract On the basis of the recent XPS results, which established the existence of Pt 4+ ions in KCP at 153 K, a new model is proposed of platinum valence state in KCP, that is, a valence mixing state of 0.85 Pt 2+ and 0.15 Pt 4+ ions as a ground state and Pt 3+ ionic state as an excited state. The experimental results of the conductivity, the spin susceptibility, the NMR relaxation, the EPR relaxation, and the neutron scattering are discussed according to the present model.