Crystallographic and magnetic phase transition in TlMnCl3

Vijayaraghavan, R. ; Karkhanavala, M. D. ; Damle, S. D. ; Gupta, L. C. ; Rao, U. R. K. (1973) Crystallographic and magnetic phase transition in TlMnCl3 Pramana - Journal of Physics, 1 (3). pp. 155-160. ISSN 0304-4289

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The results of our NMR, EPR and magnetic susceptibility measurements in the paramagnetic state of TlMnCl3 are reported here. The NMR paramagnetic shift of thallium is found to be small but positive. Mn2+ EPR line is exchange narrowed. The susceptibility measurements indicate an antiferromagnetic transition. The heat of crystallographic phase transition ΔH, in TlMnCl3 has been measured using differential scanning calorimetry. The crystallographic phase transition appears to be first order and ΔH is unusually low viz. 10 cal mole−1. In the case of KMnF3 ΔH, which is reported here for the first time, is determined to be 2 cal mole−1.

Item Type:Article
Source:Copyright of this article belongs to Indian Academy of Sciences.
Keywords:Phase Transition; Antiferromagnetic; Differential Scanning Calorimetry; TlMnCl3; KMnF3
ID Code:61661
Deposited On:15 Sep 2011 11:32
Last Modified:18 May 2016 11:16

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