کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1556826 | 999212 | 2013 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Positive MR and Large Temperature-Field Sensitivity in Manganite Based Heterostructures
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
شیمی مواد
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چکیده انگلیسی
Studies on the ZnO/La0.5Pr0.2Sr0.3MnO3 (LPSMO)/SrNb0.002Ti0.998O3 (SNTO) heterostructure having varying thickness of p-type LPSMO (100Â nm - LP1) and (200Â nm - LP2) manganite are carried out. ZnO/LPSMO (n-p) and LPSMO/SNTO (p-n) junctions of both the heterostructures exhibit good rectifying behavior in a wide range of temperature and applied field. Forward and reverse bias characteristics of both the junctions of heterostructures show opposite behavior. The observation of negative magnetoresistance (MR) at 5Â K and positive MR at 300Â K, in both the heterostructures, has been explained in the context of interface region effects and filling of energy bands of LPSMO manganite. Further, at high temperature, the heterostructures exhibit large temperature (46%Kâ1) and field (40%Tâ1) sensitivities. Dependence of transport, magnetotransport, I-V and sensing properties of the heterostructures, on the temperature, field and film thicknesses have been discussed in this communication.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Materials Science & Technology - Volume 29, Issue 10, October 2013, Pages 989-994
Journal: Journal of Materials Science & Technology - Volume 29, Issue 10, October 2013, Pages 989-994
نویسندگان
Uma Khachar, P.S. Solanki, R.J. Choudhary, D.M. Phase, D.G. Kuberkar,