Document Type

Article

Publication Date

9-23-2005

Journal or Book Title

Physical Review B

Volume

72

Issue

10

First Page

104431

DOI

10.1103/PhysRevB.72.104431

Abstract

We report the results of a neutron diffraction study, carried out on both single crystalline and polycrystalline samples of Tb5Si2.2Ge1.8 and polycrystalline Tb5Si2.5Ge1.5. On cooling, at approximately 120 K, the Tb5Si2.2Ge1.8 system undergoes a magnetoelastic transition from a high-temperature monoclinic-paramagnetic to a low-temperature orthorhombic-ferromagnetic structure. Between 120 K and 75 K, the magnetic structure has a net ferromagnetic component along the a axis direction. The moments are slightly canted with respect to the a axis, while the components along the b and c axes are ordered antiferromagnetically. A second magnetic transition occurs at approximately 75 K. Below this temperature, the magnetic structure consists of ferromagnetically aligned μx and μz projections of the magnetic moments and an antiferromagnetic arrangement of theμy moment components. Magnetic structures of Tb5Si2.5Ge1.5 are nearly identical to those of Tb5Si2.2Ge1.8.

Comments

This article is from Physical Review B 72 (2005): 104431, doi:10.1103/PhysRevB.72.104431.

Copyright Owner

American Physical Society

Language

en

File Format

application/pdf

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