کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9829577 | 1524494 | 2005 | 11 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Transformation of the incongruent-melting state to the congruent-melting state via an external electric field for the growth of langasite
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The imposition of an external electric field on a growth system affects the crystallization process in two manners: (i) the thermodynamic effect and (ii) the growth-dynamic effect. The former modifies the chemical potentials of associated phases in equilibrium which could convert the incongruent-melting state into congruent-melting state. Langasite (La3Ga5SiO14), an incongruent-melting material in the ternary system of La2O3-Ga2O3-SiO2, became congruent-melting under an external electric field of 600Â V/cm. This conversion was attributed to the inversion of the stability relationship in terms of the molar free energy between the primary phase in equilibrium with liquid and the liquid phase at the composition of langasite. Such a transformation is generally possible when the electrical permittivities of liquid, primary phase and incongruent-melting material increase toward the end component of the primary phase.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Crystal Growth - Volume 281, Issues 2â4, 1 August 2005, Pages 481-491
Journal: Journal of Crystal Growth - Volume 281, Issues 2â4, 1 August 2005, Pages 481-491
نویسندگان
Satoshi Uda, Xinming Huang, Shinji Koh,