Neutron Diffraction Study of Antiferromagnetic MnTiO3 and NiTiO3

Autor:	S. J. Pickart, Gen Shirane, Yoshikazu Ishikawa
Rok vydání:	1959
Předmět:	Diffraction Crystallography Nuclear magnetic resonance Magnetic structure Spins Magnetism Neutron diffraction General Physics and Astronomy Antiferromagnetism Neutron Crystal structure
Zdroj:	Journal of the Physical Society of Japan. 14:1352-1360
ISSN:	1347-4073 0031-9015
DOI:	10.1143/jpsj.14.1352
Popis:	MnTiO 3 and NiTiO 3 have a rhombohedral crystal structure similar to FeTiO 3 in which layers of Fe and Ti atoms alternate along the rhombohedral axis with oxygen layers between them. A powder neutron diffraction study shows that MnTiO 3 has a magnetic structure with the Mn 2+ spins antiparallel within each layer. On the other hand, NiTiO 3 has the same magnetic structure as FeTiO 3 , in which the spins are parallel within each layer and adjacent layers are antiparallel. The spins are directed along the [111] direction in MnTiO 3 and perpendicular to it in NiTiO 3 . In addition to the magnetic study, the nuclear intensities indicate that the Ni and Ti in NiTiO 3 are only 88 per cent ordered.
Databáze:	OpenAIRE
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