کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1597088 | 1002914 | 2006 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Emission Mössbauer studies of the magnetoresistive compound, La0.7Sr0.3MnO3
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Emission Mössbauer studies of the magnetoresistive compound, La0.7Sr0.3MnO3 Emission Mössbauer studies of the magnetoresistive compound, La0.7Sr0.3MnO3](/preview/png/1597088.png)
چکیده انگلیسی
The magnetic behavior of the Sr0.3 manganite is studied using a local microprobe, 57Co. In contrast with Ca substituted manganites, a much larger fraction of the material exhibits short-range order with superparamagnetic-like behavior even at 80Â K. The differences in behavior are attributed to the large mismatch between the ionic radii of La+3 and the divalent substituent Sr+2, which introduces anharmonicity in local vibrations. In common with all other compounds exhibiting negative bulk magnetoresistivity, the Sr0.3 compound also exhibits very marked softening of lattice as one approaches Tc from below. Application of an external magnetic field results in coalescing of nanosized magnetic clusters to form larger ones with better alignment of spins.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Solid State Communications - Volume 138, Issue 5, May 2006, Pages 224-228
Journal: Solid State Communications - Volume 138, Issue 5, May 2006, Pages 224-228
نویسندگان
Amar Nath, Vladimir Chechersky, K.V. Ramanujachary, Robert Jr.III, Sam Lofland, Steve Preite,