Семинар ОИКС 23-09-2014 г.
Дорогие коллеги, 23 сентября 2014 г. в 15.00 состоится семинар ОИКС (1 корпус, 4 этаж, конференц зал).
Тема: «Tuning the interbilayer coupling in (La1-yNdy)1.4Sr1.6Mn2O7: “chemical pressure” and rare-earth magnetism.»
Докладчик: Dr. Kirill Shaykhutdinov (Kirensky Institute of Physics, Krasnoyarsk, Russia.)
Дорогие коллеги, 23 сентября 2014 г. в 15.00 состоится семинар ОИКС (1 корпус, 4 этаж, конференц зал).
Тема: «Tuning the interbilayer coupling in (La1-yNdy)1.4Sr1.6Mn2O7: “chemical pressure” and rare-earth magnetism.»
Докладчик: Dr. Kirill Shaykhutdinov (Kirensky Institute of Physics, Krasnoyarsk, Russia.)
Аннотация
The aim of the study is to establish the mechanisms responsible for interbilayer coupling in bilayred manganites La2-xSr1+xMn2O7 and search for way to its controlled tuning. We synthesized the series of high-quality single crystals of bilayered manganites with formula La2-xSr1+xMn2O7 using the optical floating-zone technique. In this series we use the isovalent substitution in each of cation sublattices (La, Sr, Mn) which gives the possibility of selective influence on the parameters of interbilayered coupling at the fixed value of electron doping in Mn-O planes.
Elucidation of the mechanisms and finding ways to influence the interplanar exchange in layered manganites allow to create materials with the desired parameters of the magnetic ordering, and, accordingly, the required parameters insulator-metal transition, the interplanar conductivity and magnetoresistance.