ACTA

Relaxation of ⁵³Cr Spin Echo Signals in Cd_0.985Ag_0.015Cr₂Se₄

G.N. Abelyashev^a, V.N. Berzhansky^a, S.N. Polulyakh^a and N.A. Sergeev^b
^aDepartment of Physics, Simferopol University Yaltinskaja 4, 333007 Simferopol, Ukraine
^bInstitute of Physics, University of Szczecin, Wielkopolska 15, 70-451 Szczecin, Poland

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The frequency dependences of the relaxation times of NMR spin echo signals of quadrupole nuclei ⁵³Cr at t_e=τ and t_e=3τ in ferromagnetic semiconductor Cd_0.985Ag_0.015Cr₂Se₄ were investigated at temperature 4.2 K. It was shown that there are two kinds of the quadrupole nuclei ⁵³Cr, which have quite different relaxation times. The existence of two kinds of the nuclei ⁵³Cr was connected with doping of the cadmium selenochromite with Ag⁺ ions.

DOI: 10.12693/APhysPolA.97.753
PACS numbers: 76.20.+q, 76.60.-k, 76.60.Lz