A Martensitic Transformation Triggered by Magnetic Ordering: TbCu

  • J. Pierre
  • B. Hennion


Equiatomic rare earth-copper compounds RCu with heavy rare earths have at room temperature a cubic CsCl-type structure (except with Yb), whereas light rare earth compounds have a FeB structure. Anomalous behaviours of the magnetic susceptibility (1) and Knight shift (2) have been observed for GdCu, which were attributed to a structural instability at low temperatures. Morin (3) observed by x-ray investigations a crystallographic transition when a CsCl-type sample of GdCu was cooled below room temperature; annealing at about 700 K was necessary to restore the CsCl-structure. A martensitic transformation has also been detected in YCu below 150 K by resistivity measurements (4).


Martensitic Transformation Heavy Rare Earth Knight Shift Phonon Branch Crystal Field Transition 


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Copyright information

© Plenum Press, New York 1982

Authors and Affiliations

  • J. Pierre
    • 1
  • B. Hennion
    • 2
  1. 1.Laboratoire Louis NéelC.N.R.SGrenoble-cédexFrance
  2. 2.Laboratoire Léon BrillouinOrme-les-Merisiers B.P. n° 2Gif-sur-YvetteFrance

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