Two-Dimensional Antiferromagnetic Correlations in an La1.4Sr1.6(Mn0.9Co0.1)2O7 Single Crystal

Авторы:
A. A. Bykov, I. A. Zobkalo, A. A. Dubrovskii, O. P. Smirnov, S. E. Nikitin, K. Yu. Terent’ev, S. V. Gavrilov, and K. A. Shaikhutdinov
Год публикации:
2017
Журнал:
Journal of Experimental and Theoretical Physics N 5 vol. 124 786-791
Абстракт:

The temperature and field dependences of the magnetization, the electrical resistivity, and the magnetostriction of bilayer lanthanum manganite La1.4Sr1.6Mn2O7 single crystals and cobalt-doped La1.4Sr1.6(Mn0.9Cu0.1)2O7 are measured. The magnetostriction of the cobalt-doped compound increases as compared to the initial La1.4Sr1.6Mn2O7 compound, and the magnetization and the magnetoresistance of the former compound change substantially. Powder and single-crystal neutron diffraction patterns are used to detect ferromagnetic ordering in La1.4Sr1.6(Mn0.9Co0.1)2O7 at a temperature below TC ~ 45(2) K, and this ordering coexists with antiferromagnetic correlations, which develop at temperatures below TC ~ 80(5) K.

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