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Bulletin of Pure and Applied Sciences- Physics (Started in 1982)
eISSN: 2320-3218
pISSN: 0970-6569
Impact Factor: 6.987 (2018)
DOI: 10.5958/2320-3218
Editor-in-Chief:  Prof. Madan jee,
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Article Details

Bulletin of Pure and Applied Sciences- Physics (Started in 1982)
Year : 2018, Volume & Issue : Volume-37D, Issue-2 (July-December)
Page No. : 55-58, Article Type : Original Aticle
Article DOI : 10.5958/2320-3218.2018.00011.8 (Received on 16.04.2018, Accepted on 28.08.2018)

Calculation of Spin Relaxation Rate of Iron Ion

Supriya Kumari1, J.P. Kushwaha2, Dipo Mahto3
Author’s Affiliation : 1Research scholar, University Department of Physics, Tilka Manjhi Bhagalpur University , Bhagalpur, Bihar 812007, India 2Assistant Professor, Dept. of Physics, Jay Prakash College, Narayanpur, Bihar 853203, India 3Associate Professor, Dept. of Physics, Marwari College, Bhagalpur, Bihar 812007, India.

Corresponding Author : Dipo Mahto Associate Professor, Dept. of Physics, Marwari College, Bhagalpur, Bihar 812007, India.,
E-Mail:-[email protected]


Abstract

The present paper discusses the spin relaxation process and calculates the spin relaxation rate of Iron ion (Fe+3). We also have discussed the variation of the spin relaxation rate with different low temperature and from this result, it has been shown that at low temperature this mechanism is in-effective in the temperature range up to 300K. We have extended this work to apply the temperature range up to 500K and showed that the relaxation rate at low temperature, relaxation rate at low temperature due to Hamiltonian doublet and relaxation rate at low temperature using strain operator increase with increasing the temperature. This also concludes that indirect two phonon process cannot be dominant mechanism for spin relaxation of S-state Iron ions and not able to produce any observable effect on the Mossbauer hyperfine spectrum.

Keywords

Spin relaxation rate, Temperature and Phonon
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