کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8162770 | 1525198 | 2014 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Direct visualization of cubic to tetragonal phase transition in La0.2Sr0.8MnO3âδ using transmission electron microscopy
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Direct visualization of cubic to tetragonal phase transition in La0.2Sr0.8MnO3âδ using transmission electron microscopy Direct visualization of cubic to tetragonal phase transition in La0.2Sr0.8MnO3âδ using transmission electron microscopy](/preview/png/8162770.png)
چکیده انگلیسی
Structural phase transition studies employing low-temperature transmission electron microscopy (LT-TEM) and low-temperature x-ray diffraction (LT-XRD) have been carried out on wide-band La0.2Sr0.8MnO3âδ (δ=0.01) manganite. These studies reveal clear evidence of cubic to tetragonal phase transition occurring below 260 K in La0.2Sr0.8MnO3âδ (δ=0.01). TEM observations depict that cubic to tetragonal phase-transition results in formation of nanotwinned microstructure of the tetragonal phase. Formation of nanotwins has been attributed to orbital-orientation phase-separation leading to minimization of strain. The magnetic and electron transport measurements reveal that the structural phase transition is coupled with a canted C-type antiferromagnetic and semi-conductor to insulating phase transition.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physica B: Condensed Matter - Volume 448, 1 September 2014, Pages 290-296
Journal: Physica B: Condensed Matter - Volume 448, 1 September 2014, Pages 290-296
نویسندگان
Aga Shahee, Niranjan Prasad Lalla,