Investigations of Phase Transitions in (NH_{4})_{3}H(SO_{4})_{2} Crystal by Means of Mn^{2+} EPR Spectra

• Authors: W. Bednarski , S. Waplak
• Languages of publication: EN

Abstracts

EN

EPR of Mn^{2+} impurity ion in the (NH_{4})_{3}H(SO_{4})_{2} crystal is studied in the temperature range 80-420 K. It is shown that Mn^{2+} substitutes NH_{4}^{+}(I) ion and is coordinated in deformed oxygen octahedron in which takes two "off-center" positions. Its spin-Hamiltonian parameters and direction cosines of crystal field are determined. The successive EPR line splitting for three phase transitions is discussed.

Keywords

EN

61.50.-f; 76.30.-v

Discipline

• 61.50.-f: Structure of bulk crystals
• 76.30.-v: Electron paramagnetic resonance and relaxation(see also 33.35.+r Electron resonance and relaxation in atomic and molecular physics; 87.80.Lg Magnetic and paramagnetic resonance in biological physics)

• Journal: Acta Physica Polonica A
• Year: 1996
• Volume: 90
• Issue: 6
• Pages: 1185-1192

Dates

published

1996-12

received

1996-06-11

(unknown)

1996-09-09

Contributors

author

W. Bednarski

• Institute of Molecular Physics, Polish Academy of Sciences, Smoluchowskiego 17/19, 60-179 Poznań, Poland

author

S. Waplak

• Institute of Molecular Physics, Polish Academy of Sciences, Smoluchowskiego 17/19, 60-179 Poznań, Poland

Identifiers

DOI

10.12693/APhysPolA.90.1185