کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1811538 | 1025597 | 2011 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Characterization of the Landau expansion equation for SrTiO3 under pressure
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
This work focuses on the characterization of the expansion of Landau's main equation for Pm3Ìm structures, which are transformed with symmetry subgroups, associated with M+3 and R+4 special points of the Brillouin zone, under hydrostatic pressure. This solution has been adapted to include the general influence of hydrostatic pressure and the evolution of the order parameter. We present a simple scheme in order to search systematically the ground state of all perovskite structures derivable from octahedral rotations under high pressure. We have applied this adaptation to SrTiO3 perovskite. Results of the characterization of Landauâ²s equation for the cubic-tetragonal phase transition under pressure are discussed here.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physica B: Condensed Matter - Volume 406, Issue 20, 15 October 2011, Pages 3922-3925
Journal: Physica B: Condensed Matter - Volume 406, Issue 20, 15 October 2011, Pages 3922-3925
نویسندگان
L. Khaber, A. Ferhat-Hamida, A. Hachemi, H. Hachemi, A. Beniaiche,