電子科技大學研究生學位論文撰寫格式范例-文庫吧
2025-06-09 04:40 本頁面
【正文】 can be achieved by utilizing base metal (Ni or Cu) electrode as internal metallization in MLCC over the more expensive precious metals such as Pd or Ag/Pd. ┄┄In this thesis, the basic modification mechanisms of BaTiO3 have been analyzed. Then novel materials and process are explored and investigated for nonreducible dielectrics. The main results are as follows: effects of rare earth elements on the microstructure and dielectric properties of BaTiO3MgR (R=rare earth elementals La, Pr, Ce, Nd, Sm, Gd, Dy, Ho, Er, Yb) system are investigated in detail. ┄┄ effects of various ions on the dielectric properties of the coreshellstructured BaTiO3MgR (R=Yb, Ho) system are studied in detail and the relative mechanisms are discussed. ┄┄ modification mechanisms of 3d elements are investigated in the BaTiO3YbM (M＝ 3d elements Cr, Mn, Fe, Co, Ni, Zn) system. Coreshell structure is found in all the 3dYbcodoped samples, resulting in improvement of TCC behavior. ┄┄ novel route has been developed to prepare nonreducible Y5V and X8R materials, in which solgel derived plex oxide dopants are applied to ultrafine (Ba,Ca)(Ti,Zr)O3 (BCTZ) or BaTiO3 powders. Keyword 三: modification mechanism, nonreducible, coreshell structure, plex oxide dopants目 錄第一章 緒 論 ......................................................1 多層陶瓷電容器的發(fā)展概況及現(xiàn)狀 ................................2 多層陶瓷電容器的結(jié)構(gòu)和發(fā)展趨勢 .............................3 BMEMLCC 帶來的挑戰(zhàn)和機遇 ..................................4 鈦酸鋇基抗還原介質(zhì)材料的研究歷史及現(xiàn)狀
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