Investigations of Defect Centres in Alkali Halides Doped with Trivalent Cations. Part 2: The NaCl:Cr^{3+} Crystals

• Authors: M. Suszyńska , R. Capelletti
• Languages of publication: EN

Abstracts

EN

On the basis of ITC studies, complemented by some spectroscopic and ionic conductivity measurements, it was stated that dielectric relaxations of the NaCl:Cr^{3+} crystals are more complicated than those typical of AH:Me^{2+} systems. The complexity of these phenomena concerns the number, shape and positions of the bands appearing in the ITC spectrum. The origin of the main peaks was discussed in terms of relaxations related with the chromium centres; substitutionally and off-center located Cr3^{+} ions, accompanied by two cation vacancies at geometrically different positions, and Cr clusters distributed around dislocations were considered.

Keywords

EN

77.40.+i

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 1993
• Volume: 83
• Issue: 1
• Pages: 39-49

Dates

published

1993-01

received

1992-07-09

Contributors

author

M. Suszyńska

• W. Trzebiatowski Institute of Low Temperature and Structure Research, Polish Academy of Sciences, Pl. Katedralny 1, 50-950 Wrocław, Poland

author

R. Capelletti

• Physics Department, Parma University, 43100 Parma, Italy

Identifiers

DOI

10.12693/APhysPolA.83.39