B. Verkin Institute for Low Temperature Physics and Engineering of the National Academy of Sciences of Ukraine, 47 Lenin Ave., Kharkov 61103, Ukraine
Received March 2, 2012
The relaxation rate of the nuclear magnetic resonance is calculated exactly for a model spin-1/2 chain with
the magnetic impurity. It is shown that the deviations of the impurity's coupling to the chain and the effective
impurity's g-factor from the values of the host chain yield special features in the temperature and magnetic field
behavior for the relaxation rate.
PACS: 75.10.Jm Quantized spin models, including quantum spin frustration; PACS: 75.10.Pq Spin chain models; PACS: 76.60.–k Nuclear magnetic resonance and relaxation.
Key words: nuclear magnetic resonance, spin chain, magnetic impurity.