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ToolsMIKHAILOVA, D., SCHWARZ, B., SENYSHYN, A., BELL, Anthony, SKOURSKI, Y., EHRENBERG, H., TSIRLIN, A.A., AGRESTINI, S., ROTTER, M., REICHEL, P., CHEN, J.M., HU, Z., LI, Z.M., LI, Z.F. and TJENG, L.H. (2012). Magnetic properties and crystal structure of Sr3CoIrO6and Sr3NiIrO6. Physical Review B, 86 (13). [Article]
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PhysRevB.86.134409.pdf - Published Version
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PhysRevB.86.134409.pdf - Published Version
Available under License All rights reserved.
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Abstract
We have studied the magnetic properties and crystal structure of Sr
3
CoIrO
6
and Sr
3
NiIrO
6
as a function of temperature. Two characteristic temperatures,
T
1
=
90
K and
T
2
=
25
K for Sr
3
CoIrO
6
, and
T
1
=
85
K and
T
2
=
15
K for Sr
3
NiIrO
6
, were observed. Below
T
1
a significant increase of magnetization and below
T
2
a weak temperature dependence of magnetization in the field-cooled and practically zero magnetization values in the zero-field-cooled mode were detected for both compounds. The existence of
Ir
4
+
in Sr
3
CoIrO
6
was confirmed by an Ir-
L
III
x-ray absorption measurement. Magnetoelastic effects have been observed in the temperature dependence of the lattice parameters of Sr
3
CoIrO
6
and Sr
3
NiIrO
6
. The magnetic structure of Sr
3
CoIrO
6
in zero fields can be described as a commensurate modulated antiferromagnet with a propagation vector
k
=
(
0
,
0
,
1
)
. Neutron powder diffraction with polarized neutrons gave evidence of short-range magnetic order, above and below the magnetic ordering temperature.
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