Specific Heat and Magnetic Structure of GdT_{2}X_{2} Compounds (T = Cu, Ni, X = Sn, Sb)

• Authors: K. Kaczmarska , J. Pierre , D. Schmitt , B. Lambert-Andron , R. Belllisent , A. Guzik
• Languages of publication: EN

Abstracts

EN

The magnetic specific heat of GdNi_{2}Sn_{2}, GdNi_{2}Sb_{2} and GdCu_{2}Sb_{2} shows a λ-type anomaly at T_{N} with a noticeable reduction of the discontinuity compared to that expected for a simple antiferromagnet. It can be associated with the existence of amplitude modulated magnetic structure just below T_{N}. Above T_{N} a weak magnetic contribution is observed, evidencing the short-range ordering. From neutron diffraction studies it can be also concluded that investigated compounds have not simple antiferromagnetic structures. For GdNi_{2}Sn_{2} the propagation vector Q=(0.3,1/2,1/2) was found with the magnetic moments along the [1,0,0] axis.

Keywords

EN

75.25.+z; 75.40.-s; 75.50.Ee

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 1997
• Volume: 92
• Issue: 2
• Pages: 347-350

Dates

published

1997-08

Contributors

author

K. Kaczmarska

• Institute of Physics, University of Silesia, Uniwersytecka 4, 40-007 Katowice, Poland

author

J. Pierre

• L. Néel Laboratory, CNRS, 38042 Grenoble, France

author

D. Schmitt

• L. Néel Laboratory, CNRS, 38042 Grenoble, France

author

B. Lambert-Andron

• Crystallographic Laboratory, CNRS, 38042 Grenoble, France

author

R. Belllisent

• L. Brillouin Laboratory, CEA, Saclay, France

author

A. Guzik

• Institute of Physics, University of Silesia, Uniwersytecka 4, 40-007 Katowice, Poland