Paper Title:
Thermally Induced High-Spin Low-Spin Transition in Co[Cr0.5Ga1.5]S4 Spinel
  Abstract

A high spin (HS) – low spin (LS) transition has been discovered in the Co[Cr0.5Ga1.5]S4 spinel, where the Co ions occupy tetrahedral sites and the Cr and Ga ions octahedral ones. The latter are diluted by the non-magnetic Ga-ions. Application of magnetic fields revealed ferrimagnetic order with a Curie temperature TC = 126 K, a strong suppression of the magnetic susceptibility () and a slight shift of TC to lower temperatures. A cusp at 15.6 K on the ac (T) curve suggests a spin frustration of the re-entrant type. Characteristic for the HS-LS transition is an inflection point at 150 K on the 1/(T) curve, a lack of the Curie-Weiss region above TC and a small value of the magnetization, 4.76 emu/g at 4.4 K and at a magnetic field of 57.5 kOe.

  Info
Periodical
Solid State Phenomena (Volume 170)
Edited by
J.-L. Bobet, B. Chevalier and D. Fruchart
Pages
9-12
DOI
10.4028/www.scientific.net/SSP.170.9
Citation
J. Krok-Kowalski, E. Maciążek, T. Groń, A. W. Pacyna, T. Mydlarz, G. Władarz, "Thermally Induced High-Spin Low-Spin Transition in Co[Cr0.5Ga1.5]S4 Spinel", Solid State Phenomena, Vol. 170, pp. 9-12, 2011
Online since
April 2011
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: L.G. Antoshina, A.B. Korshak
Abstract:The investigation of magnetic properties of diluted ferrite NiGa0.8Al0.8Fe0.4O4 is carried out. Anomalous behaviour of spontaneous...
97
Authors: S. Rostamzadehmansoor, Mirabdullah Seyed Sadjadi, K. Zare, Nazanin Farhadyar
Abstract:Magnetic oxide nanoparticles with proper surface coatings are increasingly being evaluated for clinical applications such as hyperthermia,...
19
Authors: Tadeusz Groń, Elzbieta Tomaszewicz, Marek Berkowski, Monika Oboz, Joachim Kusz, Henryk Duda, Piotr Urbanowicz
Chapter 2: Metal Oxides
Abstract:X-ray diffraction measurement at 298 K of CdMoO4:Dy3+ showed that the molybdenum ions are tetrahedral coordinated and...
107