NEUTRON-DIFFRACTION STUDY OF ANTIFERROMAGNETIC FeTiO$sub 3$ AND ITS SOLID SOLUTIONS WITH /cap alpha/-Fe$sub 2$ O $sub 3$
Journal Article
·
· Phys. and Chem. Solids
While FeTiO/sub 3/ and alpha -Fe/sub 2/O/sub 3/ are both antiferromagnetic, some solid solutions of the two possess strong magnetic moments which are believed to be related to an ordering of the Fe and Tl atoms. Neutron powder patterns confirm the x-ray picture of FeTiO/sub 3/ as alternating layers of Fe and Ti along the STA111! axis of the rhombohedral cell with intervening oxygen layers, and provide more accurate oxygen parameters. Data taken below the Neel point of 68 deg K suggest a model for the spin structure in which Fe/sup 2+/ moments are ferromagnetically coupled within a (1 1 1) sheet and directed perpendicular to it. Studies on the solid solutions connect the presence of the spontaneous moment with ordering of the Ti and Fe atoms, and show that the spin arrangement in most of these compositions is of the lying within (1 1 1) sheets. The fact that no long-range ordered spin structure is observed down to 4.2 deg K for the sample containing 12% hematite can be explained on the basis of an inhomogeneons magnetic structure. (auth)
- Research Organization:
- Westinghouse Research Labs., Pittsburgh; Naval Ordnance Lab., White Oak, Md.; and Brookhaven National Lab., Upton, N.Y.; Pennsylvania State Univ., University Park; and Brookhaven National Lab., Upton, N.Y.; Univ. of Tokyo
- NSA Number:
- NSA-14-002382
- OSTI ID:
- 4236934
- Journal Information:
- Phys. and Chem. Solids, Journal Name: Phys. and Chem. Solids Vol. Vol: 10
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
Similar Records
A STUDY OF THE MAGNETIC PROPERTIES OF THE FeTiO$sub 3$-/cap alpha/Fe$sub 2$O$sub 3$ SYSTEM BY NEUTRON DIFFRACTION AND THE MOSSBAUER EFFECT
NEUTRON DIFFRACTION STUDY OF ANTIFERROMAGNETIC MnTiO$sub 3$ AND NiTiO$sub 3$
MOSSBAUER STUDY OF FeTiO$sub 3$ AND ITS SOLID SOLUTIONS WITH $alpha$Fe$sub 2$O$sub 3$
Journal Article
·
Mon Oct 01 00:00:00 EDT 1962
· J. Phys. Soc. Japan
·
OSTI ID:4752226
NEUTRON DIFFRACTION STUDY OF ANTIFERROMAGNETIC MnTiO$sub 3$ AND NiTiO$sub 3$
Journal Article
·
Thu Oct 01 00:00:00 EDT 1959
· J. Phys. Soc. Japan
·
OSTI ID:4215210
MOSSBAUER STUDY OF FeTiO$sub 3$ AND ITS SOLID SOLUTIONS WITH $alpha$Fe$sub 2$O$sub 3$
Journal Article
·
Wed Feb 28 23:00:00 EST 1962
· J. Phys. Soc. Japan
·
OSTI ID:4658943