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1977 (1)
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 Title    Mössbauer-spektroskopische Untersuchungen an Na2MnFeF7  
 Abstract    Mössbauer Spectroscopic Investigation of N a2M nFeF7 J . P e b l e r , K. S c h m i d t , D. B a b e l und W. V e r s c h a r e n In contrast to the Mössbauer spectrum of the orthorhombic compound Na2N iF eF 7 that of the manganous compound Na2MnFeF7 gives evidence of two different iron positions. This rules out Na^MnFeF? to be isostructural with N a2N iF eF 7 , which crystallizes like most compounds Na2MHMin F 7 in the weberite structure, the M111 ions occupying only one site in space group Im m 2-C |°. The Mössbauer data evaluated for the two iron sites (Fe 1 /Fe 2 respectively) in Na2MnFeF7 are: 0 = 0/90°, cp = undetermined/700, rj — 0.6 both, H = 551/541 kOe, Vzz = + 2 .7 • 1018 Vcm-2 both. NaMnFeF7 is antiferromagnetic with a Neel temperature of Tn — 94 K for both iron positions. 
  Reference    (Z. Naturforsch. 32b, 369—372 [1977]; eingegangen am 27. Dezember 1976) 
  Published    1977 
  Keywords    Mössbauer Spectra, Internal Field, Field Gradient 
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 TEI-XML for    default:Reihe_B/32/ZNB-1977-32b-0369.pdf 
 Identifier    ZNB-1977-32b-0369 
 Volume    32