Giant magnetostriction in the Van Vleck paramagnet LiTmF4
Al'tshuler S. A., Krotov V. I., Malkin B. Z.
Stimulated longitudinal magnetostriction was measured at helium temperatures for the first time in a tetragonal LiTmF4 crystal with Tm3+ ions in the singlet ground state. A strong magnetostriction anistropy, which varied from < 10~6 for H| | to the enormous value of 1.1 X 1(T3 for H| | in a <30-kOe magnetic field, was observed.