Microstructures and microwave dielectric properties of (1 鈭?#xa0;y)Lab>1鈭?span style='font-style: italic'>xb>Smb>xb>(Mgb>0.5b>Snb>0.5b>)Ob>3b>-yCab>0.8b>Smb>0.4/3b>TiOb>3b> ceramics

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• 作者：Yen-Nien Wang^a ; Yih-Chien Chen^b ; ^{EE049@mail.lhu.edu.tw} ; ^{ycchenncku@yahoo.com.tw} ; Ya-Dung Pan^c ; Wei-Cheng Lee^b
• 关键词：A. Sintering ; C. Dielectric properties ; Ceramic ; X-ray diffraction
• 刊名：Ceramics International
• 出版年：2012
• 期刊代码：13_02728842
• 类别：ms
• 出版时间：May, 2012
• 卷：38
• 期：4
• 页码：3097-3103
• 文件大小：1568 K

摘要

The (1 鈭?#xA0;y)Lab>1鈭?em>xb>Smb>xb>(Mgb>0.5b>Snb>0.5b>)Ob>3b>-yCab>0.8b>Smb>0.4/3b>TiOb>3b> ceramics were prepared by the conventional solid-state method. The X-ray diffraction patterns of the Lab>1鈭?em>xb>Smb>xb>(Mgb>0.5b>Snb>0.5b>)Ob>3b> ceramics revealed that Lab>1鈭?em>xb>Smb>xb>(Mgb>0.5b>Snb>0.5b>)Ob>3b> is the main crystalline phase, which is accompanied by a little Lab>2b>Snb>2b>Ob>7b> as the second phase. An apparent density of 6.59 g/cm³, a dielectric constant (蓻b>rb>) of 19.9, a quality factor (Q 脳 f) of 70,200 GHz, and a temperature coefficient of resonant frequency (蟿b>fb>) of 鈭?7 ppm/掳C were obtained when the Lab>0.97b>Smb>0.03b>(Mgb>0.5b>Snb>0.5b>)Ob>3b> ceramics were sintered at 1500 掳C for 4 h. The temperature coefficient of resonant frequency (蟿b>fb>) increased from 鈭?7 to +6 ppm/掳C as y increased from 0 to 0.6 when the (1 鈭?#xA0;y)Lab>0.97b>Smb>0.03b>(Mgb>0.5b>Snb>0.5b>)Ob>3b>-yCab>0.8b>Smb>0.4/3b>TiOb>3b> ceramics were sintered at 1500 掳C for 4 h. 0.425Lab>0.97b>Smb>0.03b>(Mgb>0.5b>Snb>0.5b>)Ob>3b>-0.575Cab>0.8b>Smb>0.4/3b>TiOb>3b> ceramic that was sintered at 1500 掳C for 4 h had a 蟿b>fb> of 鈭? ppm/ 掳C.