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Electromultipole interaction and paramagnetic relaxation in ruby. IV. Spin-lattice relaxation

✍ Scribed by S. A. Peskovatskii

Publisher
John Wiley and Sons
Year
1971
Tongue
English
Weight
689 KB
Volume
44
Category
Article
ISSN
0370-1972

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✦ Synopsis

Abstract

The influence of the stretched line wings on the spin‐lattice (longitudinal) relaxation rate is considered. It is shown that in the spin‐system with long line wings even the direct process of the spin‐lattice energy exchange may involve mainly nonresonant phonons. The component of the relaxation rate owing to the wing (W~g~) has a stronger temperature dependence than that of the conventional direct process. The shape of the line wings determines the power of this dependence, The wings of the quadrupole‐quadrupole broadened lines give n = 2.4. The relaxation owing to the wings explains anomalies in the temperature, concentration, and frequency dependences of the longitudinal relaxation rate observed. The relaxation model proposed fits well the experimental results of Cr^3+^ ions in corundum and rutile. It is quite possible that this model plays an important role in other paramagnetics, too.

📜 SIMILAR VOLUMES

Electromultipole interaction and paramag
Electromultipole interaction and paramagnetic relaxation in ruby. III. Distant wing shape of EPR lines
✍ S. A. Peskovatskii 📂 Article 📅 1971 🏛 John Wiley and Sons 🌐 English ⚖ 417 KB

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