UNSPECIFIED. (2004) Quantum tunneling of the magnetization in the Ising chain compound Ca3Co2O6. JOURNAL OF MATERIALS CHEMISTRY, 14 (8). pp. 1231-1234. ISSN 0959-9428

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Abstract

The magnetic behavior of the Ca3Co2O6 spin chain compound is characterized by a large Ising-like character of its ferromagnetic chains, set on a triangular lattice, that are antiferromagnetically coupled. At low temperature, T < 7 K, the 3D antiferromagnetic state evolves towards a spin frozen state. In this temperature range, magnetic field driven magnetization of single crystals (H // chains) exhibits stepped variations. The occurrence of these steps at regular intervals of the applied magnetic field, H-step = 1.2 T, is reminiscent of the quantum tunneling of the magnetization (QTM) of molecular based magnets. Magnetization relaxation experiments also strongly support the occurrence of this quantum phenomenon. This first observation of QTM in a magnetic oxide belonging to the large family of A(3)BB'O-6 compounds opens new opportunities to study a quantum effect in a very different class of materials from molecular magnets.

Item Type:	Journal Article
Subjects:	Q Science > QD Chemistry T Technology > TA Engineering (General). Civil engineering (General)
Journal or Publication Title:	JOURNAL OF MATERIALS CHEMISTRY
Publisher:	ROYAL SOC CHEMISTRY
ISSN:	0959-9428
Date:	2004
Volume:	14
Number:	8
Number of Pages:	4
Page Range:	pp. 1231-1234
Identification Number:	10.1039/b316717h
Publication Status:	Published
URI:	http://wrap.warwick.ac.uk/id/eprint/8551

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