NDLI: Neutron-diffraction studies of the antiferromagnetic–ferromagnetic transition in anion-deficient cobaltites

Content Provider	Springer Nature Link
Author	Sikolenko, V. V. Efimov, V. V. Efimova, E. A. Tiutiunnikov, S. I. Selutin, A. G. Karpinsky, D. V. Keller, L. Ritter, C. Nazarenko, M. A. Troyanchuk, I. O.
Copyright Year	2016
Abstract	Anion-deficient La$_{0.5}$Ba$_{0.5}$CoO$_{2.8}$ and Y$_{0.25}$Ca$_{0.25}$Sr$_{0.5}$CoO$_{2.62}$ cobaltites are studied under pressures up to 6.5 GPa in the temperature range of 5−300 K by neutron powder diffraction. Under ambient pressure both compounds are antiferromagnetic with T $_{N}$ = 250 K. The applied pressure induces in the first compound a gradual transition from the antiferromagnetic to ferromagnetic state through a mixed magnetic state, whereas the second compound remains antiferromagnetic in the whole pressure range. We suggest that the magnetic ground state depends on the unit-cell volume and the magnetic transition is associated with the transition of cobalt ions from the mixed high-spin/low-spin state to the intermediate-spin/low-spin state.
Starting Page	1133
Ending Page	1135
Page Count	3
File Format	PDF
ISSN	10274510
Journal	Journal of Surface Investigation. X-ray, Synchrotron and Neutron Techniques
Volume Number	10
Issue Number	6
e-ISSN	18197094
Language	English
Publisher	Pleiades Publishing
Publisher Date	2016-12-06
Publisher Place	Moscow
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	neutron diffraction magnetic structure pressure Surfaces and Interfaces, Thin Films
Content Type	Text
Resource Type	Article
Subject	Nanoscience and Nanotechnology Surfaces, Coatings and Films

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