Interplay between the crystalline and magnetic structures in BiOCu 0.94S
Journal
Journal of the Physical Society of Japan
Journal Volume
80
Journal Issue
SUPPL. B
Pages
SB011- 1 - SB011- 4
Date Issued
2011
Author(s)
Abstract
We report on the results of neutron diffraction studies made on a slightly Cu-deficient BiOCu 0.94 S sample. The sample BiOCu 0.94 S crystallizes into a tetragonal P4/nmm symmetry with cell parameters of a = b =3.8591 ? and c =8.5540 ? at 250 K. The magnetic order parameter measurements reveal an inflection point at 250 K, signaling the ferromagetic ordering of the Cu spins. An antiferromagnetic component develops below 180 K, when the crystalline unit cell experiences a sharp thermal contraction upon cooling. This results in a canted ferromagnetic spin arrangement at low temperatures, with a saturated moment of =0.61(2) ? B at 3.7 K.
Type
journal article