کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1491888 | 992363 | 2008 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Crystal structures and properties of BiMn1âxAlxO3 with x = 0.03 and 0.1
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Crystal structures and properties of BiMn1âxAlxO3 with x = 0.03 and 0.1 Crystal structures and properties of BiMn1âxAlxO3 with x = 0.03 and 0.1](/preview/png/1491888.png)
چکیده انگلیسی
Crystal structures of BiMn0.97Al0.03O3 (I) at 300 and 470Â K and BiMn0.9Al0.1O3 (II) at 90 and 300Â K were studied with synchrotron X-ray powder diffraction. The strong Jahn-Teller distortion, observed at 300Â K in I and associated with orbital order, disappeared at 470Â K completely for one site and partially for the second site. The Mn/Al-O distances were very close to each other in I at 470Â K and in II at 90 and 300Â K indicating that orbital order did not appear in II even at 90Â K. Magnetic properties of I and II were investigated with specific heat, high-temperature dc magnetic susceptibility, and ac magnetic susceptibility using different driving ac and applied dc magnetic fields and different ac magnetic field frequencies. The anomaly on the specific heat associated with a magnetic transition was strongly suppressed in II compared with that of I and BiMnO3.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Research Bulletin - Volume 43, Issue 12, 1 December 2008, Pages 3179-3187
Journal: Materials Research Bulletin - Volume 43, Issue 12, 1 December 2008, Pages 3179-3187
نویسندگان
Alexei A. Belik, Eiji Takayama-Muromachi,