کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1463142 | 989642 | 2013 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Short-range charge-ordering correlated elastic anomalies in La2/3Sr1/3FeO3
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The longitudinal and transverse ultrasonic velocities in single-phase polycrystalline La2/3Sr1/3FeO3 have been measured by a conventional pulse-echo-overlap technique at a frequency of 10 MHz. Dramatic anomalies in sound velocities for both longitudinal and transverse modes were observed near 214 K. These abnormal ultrasonic features can be fitted by the mean-field theory, which confirms the presence of the Jahn–Teller effect originating from the Fe4+. However, no obvious anomalies in magnetic and electric properties were found in this temperature range. These results give new evidence for the short-range charge ordering state.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ceramics International - Volume 39, Issue 5, July 2013, Pages 5317–5320
Journal: Ceramics International - Volume 39, Issue 5, July 2013, Pages 5317–5320
نویسندگان
Kong Hui, Zhu Changfei,