Physics of the Solid State
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Relaxation of electron spins of nitrogen centers in structural channels of beryl crystal
Zaripov R. B.1, Khairutdinov I. T.1, Mashkovtsev R. I. 2
1
2Sobolev Institute of Geology and Mineralogy, Siberian Branch Russian Academy of Sciences, Novosibirsk, Russia
Email: semak-olic@mail.ru

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The electron spin-spin and spin-lattice relaxation times of two types of nitrogen centers localized in structural channels of a beryl crystal are measured. The measurements are performed using the electron spin echo method at different orientations of the crystalline sample relative to a constant magnetic field and in a wide temperature range. It is shown that the spin-spin relaxation time of both centers is practically the same and does not depend on orientation. In the temperature range from 300 to 5 K, it varies non-monotonically within the limits from 5100 to 2400 nanoseconds. The spin-lattice relaxation time varies from 0.15 milliseconds to 2 milliseconds in the temperature range from 300 to 5 K. Keywords: relaxation, beryl crystal, electron spin echo, quantum memory, coherence.
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