Hyperfine magnetic fields at the nuclei of probe (119)Sn atoms and exchange interactions in the CaCu(3)Mn(3.96)Sn(0.04)O(12) manganiteстатья
Информация о цитировании статьи получена из
Web of Science,
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
Аннотация:We have investigated the hyperfine magnetic interactions between the nuclei of probe Sn-119 atoms in the CaCu3Mn3.96Sn0.04O12 double manganite by Mossbauer spectroscopy using magnetic measurements. A consistent description of the results obtained in terms of the Weiss molecular field model by taking into account the peculiarities of the local environment of tin atoms has allowed the indirect Cu2+-O-Mn4+ (J (CuMn) a parts per thousand -51 +/- 1 K) and Mn4+-O-Mn4+ (J (MnMn) a parts per thousand -0.6 +/- 0.6 K) exchange interaction integrals to be estimated. Based on the Kanamori-Goodenough-Anderson model, we show that the magnitude and sign of the intrasublattice exchange integral J (MnMn) correspond to both the electronic configuration of the Mn4+ cations and the geometry of their local crystallographic environment in the compound under study.