Specific heat of nearly-one-dimensional tetramethyl ammonium manganese trichloride (TMMC) and tetramethyl ammonium cadmium trichloride (TMCC)
- De Jonge, W.J.M.
- Swüste, C.H.W.
- Kopinga, K.
- Takeda, K.
Publication date
January 1975
DOI Publisher
American Physical Society (APS) ISSN
0556-2805Abstract
The specific heat of tetramethyl ammonium manganese trichloride and its cadmium isomorph is measured for 2<T<52 K. The temperature dependence of the lattice specific heat of the cadmium compound could be fitted with an expression based upon a pseudoelastic approach of the lattice vibrations in this low-dimensional system. Application of this approach to the manganese compound yields a magnetic contribution which fits the overall behavior of a one-dimensional Heisenberg model with an intrachain interaction of Jk=-6.70.5 K. Inspection of the low-temperature region yields a satisfactory agreement with the expression Cm=1.1|kTJ|+0.5|kTJ|2-0.13|kTJ|3, predicted by recent calculations
Add to ORKG