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Incommensurate magnetic ground state revealed by resonant x-ray scattering in the frustrated spin system Ca3Co2O6
DOI:
10.1103/PhysRevB.77.140403
Authors:
S.
Agrestini
(ENSICAEN)
,
A.
Bombardi
(Diamond Light Source)
,
M. R.
Lees
(University of Warwick)
,
C.
Mazzoli
(ESRF)
Co-authored by industrial partner:
No
Type:
Journal Paper
Journal:
Physical Review B
, VOL 77 (14)
, PAGES 100406
State:
Published (Approved)
Published:
April 2008
Abstract: We have performed a resonant x-ray scattering study at the Co pre-K edge on a single crystal of Ca3Co2O6. The measurements reveal an abrupt transition to a magnetically ordered state immediately below TN=25 K, with a magnetic correlation length in excess of 5500 Å along the c axis chains. There is no evidence for modifications to the Co3+ spin state. A temperature dependent modulation in the magnetic order along the c axis and an unusual decrease in the magnetic correlation lengths on cooling are observed. The results are compatible with the onset of a partially disordered antiferromagnetic structure in Ca3Co2O6
Subject Areas:
Physics,
Materials
Instruments:
NONE-No attached Diamond beamline
Added On:
19/08/2009 23:07
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