Influence of magnetic impurities on the heat capacity of nuclear spins
Abstract
It is found that in a wide range of temperatures and magnetic fields even a small concentration of magnetic impurities in a sample leads to a $T^{1}$ temperature dependence of the nuclear heat capacity. This effect is related to a nuclearspin polarization by the magnetic impurities. The parameter that controls the theory turns out not to be the impurity concentration $C_{imp}$ but instead the quantity $c_{imp} \mu_e / \mu_n$, where $\mu_e$ and $\mu_n$ are the magnetic moments of an electron and a nucleus, respectively. The ratio of $\mu_e$ and $\mu_n$ is of order of $10^3$.
 Publication:

Soviet Journal of Experimental and Theoretical Physics Letters
 Pub Date:
 September 1997
 DOI:
 10.1134/1.567523
 arXiv:
 arXiv:condmat/9709043
 Bibcode:
 1997JETPL..66..365D
 Keywords:

 Condensed Matter
 EPrint:
 doi:10.1134/1.567523