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Prog. Theor. Phys. Vol. 8 No. 2 (1952) pp. 231-251
Theory of the Nuclear Magnetic Relaxation in Crystalline Solids, I
— Direct Process
—
Toshinosuke Muto and
Mitsukuni Watanabe
Institute of Science and Technology, University of Tokyo
(Received July 20, 1952)
Abstract:
As is well-known, the nuclear magnetic relaxation due to the lattice vibrations of the crystalline solids has not yet been completely clarified since both theories proposed by Bloembergen and Pound seem to be valid for the special kinds of crystalline solids. In view of these situations, therefore, we have here presented theoretically a new mechanism of the nuclear magnetic relaxation in crystalline solids in which the crystal electron plays an important role in the intermediate states of the second or third order transition processes. Such a mechanism for the nuclear magnetic relaxation may be considered to be actually realized in all the crystalline solids. The orders of magnitude for the nuclear magnetic relaxation times are found to be in good agreements with the available experimental observations in view of our general theory being based upon the rather simplified model of Wilson for the crystalline insulators.
URL :
http://ptp.ipap.jp/link?PTP/8/231/
DOI : 10.1143/PTP.8.231
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