Mössbauer study of the phase transitions in Fe(BF4)2 · 6H2O and Co(BF4)2 · 6H2O

✍ Scribed by L. Asch; I. Dézsi; T. Lohner; B. Molnár

• Publisher: Elsevier Science
• Year: 1976
• Tongue: English
• Weight: 205 KB
• Volume: 39
• Category: Article
• ISSN: 0009-2614
• DOI: 10.1016/0009-2614(76)85224-4

✦ Synopsis

The Miissbauer spectra of iron and cobalt fluoroborate hexahydrate show a change by a factor of two in the quadrupole interaction near 2%) K and 185 K, respectively, togtther with a sudden drop in resonance fraction. This behaviour is explained as a first order phase transition in which the axial parameter of the crystalline electric field changes in sign and magnitude.