تقرير
New high-pressure phase of HfTiO4 and ZrTiO4 ceramics
| العنوان: | New high-pressure phase of HfTiO4 and ZrTiO4 ceramics |
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| المؤلفون: | Errandonea, Daniel, Santamaria-Perez, David, Bondarenko, Tatiana, Khyzhun, Oleg |
| المصدر: | Materials Research Bulletin 45, (2010) 1732-1735 |
| سنة النشر: | 2010 |
| المجموعة: | Condensed Matter |
| مصطلحات موضوعية: | Condensed Matter - Materials Science, Condensed Matter - Other Condensed Matter |
| الوصف: | We studied the high-pressure effects on the crystalline structure of monoclinic HfTiO4 and ZrTiO4. We found that the compressibility of these ceramics is highly non-isotropic, being the b-axis the most compressible one. In addition, the a-axis is found to have a small and negative compressibility. At 2.7 GPa (10.7 GPa) we discovered the onset of an structural phase transition in HfTiO4 (ZrTiO4), coexisting the low- and high-pressure phases in a broad pressure range. The new high-pressure phase has a monoclinic structure which involves an increase in the Ti-O coordination and a collapse of the cell volume. The equation of state for the low-pressure phase is also determined. Comment: 16 pages, 5 figures, 26 references, Article in Press |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1016/j.materresbull.2010.06.061 |
| URL الوصول: | http://arxiv.org/abs/1008.4675 |
| رقم الأكسشن: | edsarx.1008.4675 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1016/j.materresbull.2010.06.061 |
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