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Positron annihilation study of spin-crossover in [FexZn1− x(ptz)6](BF4)2single crystals

Authors
Journal
Journal of Physics and Chemistry of Solids
0022-3697
Publisher
Elsevier
Publication Date
Volume
55
Issue
11
Identifiers
DOI: 10.1016/0022-3697(94)90209-7
Keywords
  • C. Positron Annihilation Spectroscopy
  • D. Phase Transitions

Abstract

Abstract Positron lifetime measurements were carried out on [Fe x Zn 1− x (Ptz) 6](BF 4) 2 single crystals in the temperature range of 72–300 K. Complementary Doppler broadening spectra were also recorded at room temperature. The probability of the formation of ortho-positronium (o-Ps) (lifetime 500–1400 ps) was found to be between 10–30%. It was established that the electron spin state transformation can be monitored by positron lifetime spectroscopy also in the solid state.

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