کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
10625240 989615 2014 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effects of Nb-substitution on structure, dielectric, ferroelectric and magnetic properties of Ba4Nd2Fe2Ta8O30 ceramics
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
Effects of Nb-substitution on structure, dielectric, ferroelectric and magnetic properties of Ba4Nd2Fe2Ta8O30 ceramics
چکیده انگلیسی
Effects of Nb-substitution on crystal structure, dielectric, ferroelectric and magnetic properties of Ba4Nd2Fe2Ta8O30 ceramics were investigated. With the increase of x, Ba4Nd2Fe2(NbxTa1−x)8O30 ceramics transform from paraelectric to ferroelectric. The compositions x=0.9 and 0.95 show diffuse-type ferroelectric phase transition with Tc above room temperature (306 K for x=0.9 and 320 K for x=0.95). For x=0 and 0.5, Ba4Nd2Fe2(NbxTa1−x)8O30 ceramics are paramagnetic at room temperature. From x=0.7 to x=0.95, the remnant moment of Ba4Nd2Fe2(NbxTa1−x)8O30 ceramics increases with increasing x. Magnetic hysteresis loops for x=0.7-0.95 at room temperature were obtained and could be ascribed to the tungsten bronze structure per se. The Ba4Nd2Fe2(NbxTa1−x)8O30 ceramics with x=0.9 and 0.95 are single-phase multiferroics at room temperature.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ceramics International - Volume 40, Issue 7, Part A, August 2014, Pages 9723-9729
نویسندگان
, , , ,