کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
237149 465696 2012 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Synthesis of SrBi2Ta2O9 by solution combustion and its characterization
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Synthesis of SrBi2Ta2O9 by solution combustion and its characterization
چکیده انگلیسی

Solution combustion synthesis is an inexpensive technique to obtain high purity, homogeneous nanostructured materials. Today, ferroelectric materials are employed in electronic devices such as ferroelectric random access memories (FeRAM). This paper describes the preparation of strontium bismuth tantalate (SBT) by solution combustion synthesis (SCS), using strontium nitrate, bismuth nitrate pentahydrate, and tantalum pentachloride as oxidation reagents and urea as fuel. The influence of fuel on the electrical properties of the ferroelectric material was investigated by adding different amounts of fuel (stoichiometric (AS), 300% enriched (AS300) and 500% enriched (AS500). The AS500 powder presented a surface area of approximately 16.2 m2/g and a crystallite size of about 38 nm and its ferroelectric phase was obtained after calcination at 800 °C for 2 h. The electrical resistance increased substantially in response to an increase in the amount of fuel.

SummaryThis paper presents the synthesis of nanostructured powders using a simple technique, solution combustion synthesis (SCS). We obtained a strontium bismuth tantalate using urea as fuel. We observed the formation of nanostructured powders with average crystallite size of 38 nm. Increasing the amount of urea led to a substantial increase in the electrical resistivity of the resulting powder.Figure optionsDownload as PowerPoint slideHighlights
► The work consisted of preparing SrBi2Ta2O9 ferroelectric oxide by SCS.
► The influence of fuel on the some physics and electrical properties.
► Increasing the temperature to 800 °C promoted the formation of SrBi2Ta2O9.
► The crystallite sizes varying from 20 to 50 nm.
► The influence of the amount of fuel on the properties of the material.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Powder Technology - Volume 225, July 2012, Pages 239–243
نویسندگان
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