کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1492288 | 992375 | 2006 | 10 صفحه PDF | دانلود رایگان |
The crystal structure of dielectric ceramics in the (1 − x)La2MgTiO6 (LMT)–xBa2MgWO6 (BMW) system has been studied by X-ray powder diffraction and transmission electron microscopy. LMT and BMW were found to form solid solutions in the whole compositional range. Increase of BMW content results in two structural transformations: continuous P21/n → I2/m at x between 0.2 and 0.25 and discontinuous I2/m→Fm3¯m at x between 0.4 and 0.5. This sequence of the phase transitions is compared with structural transformations in other solid solutions between dielectric complex perovskites. It is supposed that the discontinuity of the I2/m→Fm3¯m phase transition might contribute to some peculiarities in the compositional dependence of dielectric characteristics of this system.
Journal: Materials Research Bulletin - Volume 41, Issue 1, 5 January 2006, Pages 167–176