Temperature dependence of the EPR of Mn2+in K2SO4
- 23 July 1973
- journal article
- Published by IOP Publishing in Journal of Physics C: Solid State Physics
- Vol. 6 (14) , 2366-2370
- https://doi.org/10.1088/0022-3719/6/14/016
Abstract
From a study of the EPR of Mn2+ in K2SO4 as a function of temperature, Chowdari and Venkateswarlu reported a possible phase transition at 143 K. To test whether a phase transition really occurs, the spectra due to Mn2+ in K2SO4 have been re-examined in our laboratory as a function of temperature. It was found that the Mn2+ ions occupy two sites, which are quite different from those proposed by Chowdari and Venkateswarlu, and these have been identified and analysed in detail at 4.2, 77 and 300 K at both X- and Q-band frequencies. The variation of the spin hamiltonian parameters B20 and B22 for the site with the stronger spectrum has been determined throughout the temperature range 4.2-300 K. No evidence for any phase transition was found.Keywords
This publication has 7 references indexed in Scilit:
- The Electron Paramagnetic Resonance of K2SeO4Journal of the Physics Society Japan, 1972
- Static Critical Exponents at Structural Phase TransitionsPhysical Review Letters, 1971
- Zero-Field Splitting of-State Ions. III. Corrections to Parts I and II and Application to Distorted Cubic CrystalsPhysical Review B, 1968
- Electron Paramagnetic Resonance of Mn2± in K2SO4 Single CrystalThe Journal of Chemical Physics, 1968
- Crystal rotation and orientation for electron spin resonance studiesJournal of Scientific Instruments, 1966
- Spin-lattice relaxation in rare-earth saltsProceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences, 1961
- The Specific Heats at Low Temperatures of Anhydrous Sulfates of Iron, Magnesium, Manganese, and Potassium.1Journal of the American Chemical Society, 1942