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- Title
Quadrupole spin-echo envelopes for Bi<sub>4</sub>Ge<sub>3</sub>O<sub>12</sub> single crystals doped with the atoms of transition and rare-earth elements.
- Authors
Kravchenko, E. A.; Morgunov, V. G.; Orlov, V. G.; Kargin, Yu. F.
- Abstract
The influence of a weak (below 50 Oe) constant magnetic field on a quadrupole spin-echo envelope was studied for an undoped single crystal Bi4Ge3O12, in which local magnetic fields on the order of 20–30 G were previously found, as well as for single Bi4Ge3O12 crystals doped with the atoms of transition and rare-earth elements. In all of these cases, the spin-echo envelopes were strongly influenced. A considerable increase in the nuclear spin-spin relaxation time T 2 was observed for the undoped sample upon the switching of weak external magnetic fields. For the doped samples, the spin-echo envelope decay became much slower already in the zero field. The external magnetic fields exhibited a markedly weaker influence on the spin-echo envelope for the doped samples.
- Subjects
ECHO; MAGNETIC fields; ATOMS; RELAXATION (Nuclear physics); CRYSTALS
- Publication
JETP Letters, 2007, Vol 86, Issue 5, p337
- ISSN
0021-3640
- Publication type
Article
- DOI
10.1134/S0021364007170122