THERMAL-CONDUCTIVITY OF THE FERROMAGNETIC CHAIN SYSTEM CSNIF3

[摘要] The thermal conductivity-lambda of CsNiF3 has been measured in the region 2.5 K < T < 10 K with the heat flow parallel to the chain direction. Fields up to 8 T were applied both within and perpendicular to the easy plane. The data on this ferromagnetic chain system indicate that the effect of solitons on lambda is very small, in agreement with earlier observations on [C6H11NH3]CuBr3 (CHAB). This suggests that the soliton-phonon scattering in these systems is much smaller than in comparable antiferromagnetic systems, like tetramethylammonium manganese trichloride (TMMC).

[关键词] HEAT;SOLITONS;DYNAMICS