Study of anisotropic magnetic properties of LiTmF4in (001) plane by enhanced 169Tm NMR and magnetization measurements

Abstract

The angle dependences of magnetization and hyperfine-enhanced 169Tm NMR in concentrated Van Vleck paramagnet LiTmF4 have been studied at temperature 4.2 K. NMR has been observed at frequencies 372.7 MHz at 15 kOe and 653 MHz at 25 kOe. The magnetization of LiTmF 4single crystal was measured at magnetic fields up to 55 kOe. The NMR spectra as well as magnetization were substantially anisotropic. Experimental dependences are in good agreement with calculated ones obtained with taking into account the influence of magnetostriction on crystall field. © 2006 IOP Publishing Ltd.