Universität zu Köln

Valldor, Martin, Uthe, Andre and Rueckamp, Reinhard (2011). Antiferromagnetic Ground State of Quantum Spins in the Synthetic Imanite, Ca3Ti2Si3O12: The Lost Child of the Garnet Family. Inorg. Chem., 50 (20). S. 10107 - 10113. WASHINGTON: AMER CHEMICAL SOC. ISSN 0020-1669

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Abstract

Large single crystals of the garnet imanite, Ca3Ti2Si3O12, were synthesized by a floating zone technique. Near-infrared to visible spectroscopy presents an optical gap of 1.65 eV at 4 K, proving the insulating character of this garnet compound. Electron paramagnetic resonance data indicate that the d(1) electron of Ti3+ exhibits an orbital contribution to the spin moment (g = 1.859(1)). An antiferromagnetic state is observed below T-N = 7 K, confirmed by magnetic susceptibility and specific heat data. X-ray diffraction investigations on powders and single crystals of imanite reveal that the crystal structure agrees well with expectations: the cubic symmetry Ia3 (d) over bar describes all obtained single crystal and powder diffraction data.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Valldor, Martin UNSPECIFIED UNSPECIFIED UNSPECIFIED Uthe, Andre UNSPECIFIED UNSPECIFIED UNSPECIFIED Rueckamp, Reinhard UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-487218
DOI:	10.1021/ic201057h
Journal or Publication Title:	Inorg. Chem.
Volume:	50
Number:	20
Page Range:	S. 10107 - 10113
Date:	2011
Publisher:	AMER CHEMICAL SOC
Place of Publication:	WASHINGTON
ISSN:	0020-1669
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language THERMODYNAMIC PROPERTIES; CRYSTAL-STRUCTURE; MAGNETIC-STRUCTURE; ANDRADITE; UVAROVITE; YTTRIUM; PYROPE Multiple languages Chemistry, Inorganic & Nuclear Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/48721