Eur. Phys. J. B 22, 461-471 (2001)
https://doi.org/10.1007/s100510170096

Tuning anisotropy by impurities: magnetocaloric experiments on CsNi_0.9Fe_0.1Cl₃

¹ Technische Physik, Bau 38, Universität des Saarlandes, 66123 Saarbrücken, Germany
² Condensed Matter Physics and Chemistry, Risø National Laboratory, 4000 Roskilde, Denmark
³ Institut Laue-Langevin, BP 156, 38042 Grenoble Cedex 9, France

Corresponding author: ^a maikel@mx.uni-saarland.de

Received: 20 April 2001
Published online: 15 August 2001

Abstract

The magnetic phase diagram of the Fe²⁺ doped hexagonal ABX₃ compound CsNi_0.9Fe_0.1Cl₃ is investigated by heat capacity and magnetocaloric experiments. In spite of the high doping concentration, some phase boundaries appear surprisingly well-defined, while others are broadened significantly. The discussion of this behaviour clarifies the potentials and limitations of doping as a means to manipulate the effective anisotropy in quasi one-di men sion al ABX₃ compounds.