Investigation of magnetic and magneto-transport properties of ferromagnetic-charge ordered core-shell nanostructures

被引：1
作者：
Das, Kalipada [1 ]
机构：
[1] Seth Anandram Jaipuria Coll, Dept Phys, 10 Raja Naba Krishna St, Kolkata 700005, India
来源：
JOURNAL OF APPLIED PHYSICS | 2017年 / 122卷 / 13期
关键词：
MANGANITES; MAGNETORESISTANCE; FIELD; PR1-XCAXMNO3; SIZE;
D O I：
10.1063/1.4993095
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
In our present study, we address in detail the magnetic and magneto-transport properties of ferromagnetic-charge ordered core-shell nanostructures. In these core-shell nanostructures, well-known half metallic La0.67Sr0.33MnO3 nanoparticles (average particle size, similar to 20 nm) are wrapped by the charge ordered antiferromagnetic Pr0.67Ca0.33MnO3 (PCMO) matrix. The intrinsic properties of PCMO markedly modify it into such a core-shell form. The robustness of the PCMO matrix becomes fragile and melts at an external magnetic field (H) of similar to 20 kOe. The analysis of magneto-transport data indicates the systematic reduction of the electron-electron and electron-magnon interactions in the presence of an external magnetic field in these nanostructures. The pronounced training effect appears in this phase separated compound, which was analyzed by considering the second order tunneling through the grain boundaries of the nanostructures. Additionally, the analysis of low field magnetoconductance data supports the second order tunneling and shows the close value of the universal limit (similar to 1.33). Published by AIP Publishing.
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页数：5
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