Spin Relaxation via Low-Lying Energy Level ofFe2+in MgO

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10 July 1968

journal article
research article
Published by American Physical Society (APS) in Physical Review B

Vol. 171 (2) , 299-301
https://doi.org/10.1103/physrev.171.299

Abstract

The spin-relaxation time (

T_{1}

) of

{Fe}^{2 +}

in MgO was measured from 4.2 to 13°K. The excess relaxation above that attributed to the direct processes dominant at low temperature is described by

\frac{1}{T_{1}} = A e^{- \frac{Δ}{T}}

, where

A = 6.5 \times 10^{10}

\sec^{- 1}

and

Δ = 140 °

K. This result establishes, via a measurement of the Orbach process, that there is a sharp electronic energy level at 100±10

{cm}^{- 1}

for the

{Fe}^{2 +}

ion in MgO.

Keywords

This publication has 13 references indexed in Scilit:

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