title: The magnetic phase diagram of Gd(2)Sn(2)O(7).
abstract: Measurements of the magnetic susceptibility of the frustrated pyrochlore magnet Gd(2)Sn(2)O(7) have been performed at temperatures below T = 5 K and in magnetic fields up to H = 12 T. The phase boundaries determined from these measurements are mapped out in an H-T phase diagram. In this gadolinium compound, where the crystal-field splitting is small and the exchange and dipolar energy are comparable, the Zeeman energy overcomes these competing energies, resulting in at least four magnetic phase transitions below 1 K. These data are compared against those for Gd(2)Ti(2)O(7) and will, we hope, stimulate further studies.
authors.affiliation: Instituto de Física, Universidade de São Paulo, CP 66318, 05314-970 São Paulo, SP, Brazil. freitas@if.usp.br
authors.forename: R S
authors.initials: RS
authors.lastname: Freitas
authors.forename: J S
authors.initials: JS
authors.lastname: Gardner