Crystal structures and phase transition of Rb2TeBr6 (300-12.5 K)
β Scribed by W. Abriel; J. Ihringer
- Publisher
- Elsevier Science
- Year
- 1984
- Tongue
- English
- Weight
- 736 KB
- Volume
- 52
- Category
- Article
- ISSN
- 0022-4596
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The heat capacity of ammonium hexabromotellurate (NH4)2TeBr6 was measured at temperatures from T = 5 K to T = 345 K by adiabatic calorimetry. Two l-shaped transitions were present, one at T = (193.25 2 0.05) K, with DtrsSΒ°m = (1.145 2 0.010)β’R, and another at T = (212.2 2 0.2) K, with DtrsSΒ°m = (0.1
Crystalline Cs 2 KMnF 6 , when prepared below 5003C, adopts a tetragonal elpasolite structure type. Di4erential scanning calorimetric investigations indicated that Cs 2 KMnF 6 undergoes a phase transition from the low-temperature tetragonal phase (LT) to a high-temperature phase (HT) at about 5303C.