کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10640268 | 995882 | 2005 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Enhancements of magnetoresistance in Bi- or Ti-doped La0.67Ba0.33MnO3
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
مواد الکترونیکی، نوری و مغناطیسی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Enhancements of magnetoresistance in Bi- or Ti-doped La0.67Ba0.33MnO3 Enhancements of magnetoresistance in Bi- or Ti-doped La0.67Ba0.33MnO3](/preview/png/10640268.png)
چکیده انگلیسی
Magnetic and transport properties for the series of (La0.67Ba0.33MnO3)/(Bi2O3)x/2 and (La0.67Ba0.33MnO3)/(TiO2)x have been studied. The doping Bi almost has no influence on the magnetization M and Curie temperature Tc, but remarkably improves the low-field magnetoresistance at low temperature. On the contrary, doping Ti depresses (M) and lowers Tc and peak resistivity temperature Tp, accompanying the rapid increase in the resistivity, and increases the high-field magnetoresistance at low temperature obviously. Different physical mechanisms are discussed for these different behaviors. The surface state of the particles is a key factor influencing on the magnetoresistance effects. Small amount addition of Bi or Ti can improve the room temperature magnetoresistance obviously. These results are favorable for the application studies.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: B - Volume 117, Issue 1, 25 February 2005, Pages 93-97
Journal: Materials Science and Engineering: B - Volume 117, Issue 1, 25 February 2005, Pages 93-97
نویسندگان
Xiaobo Yuan, Yihua Liu, Baoxin Huang, Weiping Chen, Chengjian Wang, Ruzhen Zhang, Liangmo Mei,