کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1595002 | 1515712 | 2008 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
In situ X-ray observation of phase transitions in ZnF2 under high pressure and high temperature
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
High-pressure and high-temperature behavior of ZnF2 with the rutile-type structure was investigated using an energy-dispersive-type X-ray diffraction method. Two high-pressure phases were found in the range up to 15 GPa and 400 âC. The CaCl2-type phase with an orthorhombic cell (space group: Pnnm) was clearly observed at 5.4 GPa and 400 âC. Further phase transition was induced above 10 GPa at room temperature. The single phase of the high-pressure phase was obtained at 15.3 GPa and 350 âC. The high-pressure phase was found to have the PdF2-type structure with a cubic cell (space group: Pa-3). The single phase was observed above 4 GPa in a pressure-release process at room temperature, and completely reverted to a mixture of the rutile-type phase and the α- PbO2-type phase at ambient condition. The high-pressure behavior of ZnF2 was similar to that of MgF2.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Solid State Communications - Volume 145, Issues 5â6, February 2008, Pages 279-282
Journal: Solid State Communications - Volume 145, Issues 5â6, February 2008, Pages 279-282
نویسندگان
Keiji Kusaba, Takumi Kikegawa,