| A new sol-gel process for preparing Ba(Mg_(1/3)Nb_(2/3))O_3 nanopowders |
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| 作者姓名： | LIAN Fang XU Lihua LI Fushen and ZHAO Hailei |
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| 作者单位： | LIAN Fang，XU Lihua，LI Fushen，and ZHAO Hailei |
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| 摘 要： | Commercially available niobium (V) oxide Nb2O5], with barium acetate Ba(CH3COO)2] and magnesium acetate Mg(CH3COO)2-4H2O] was used as the starting material in the sol-gel process for preparing Ba(Mg1/3Nb2/3)O3 (BMN) nanopowders. At first, Nb2O5 reacted with melting sodium hydroxide and transformed into dispersible oxide. The resulting glassy substance after cooling was dispersed and washed several times in distilled water to remove the Na ions. The as-prepared colloidal Nb2O5-nH2O was subsequently mixed with acetic solution of barium acetate and magnesium acetate according to the required molar proportions and followed by gelation. The ultrafine BMN powders were finally obtained after heat-treating the gel at 820℃for 1 h, and the as-sintered nanoceramics revealed a high relative density of 98.2%, and a high microwave Q-factor, of 10397 at 1.45GHz.
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A new sol-gel process for preparing Ba(Mg_(1/3)Nb_(2/3))O_3 nanopowders |
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| LIAN Fang,XU Lihua,LI Fushen,and ZHAO Hailei.A new sol-gel process for preparing Ba(Mg_(1/3)Nb_(2/3))O_3 nanopowders[J].Rare Metals,2004(1). |
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| Authors: | LIAN Fang XU Lihua LI Fushen and ZHAO Hailei |
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| Abstract: | |
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| Keywords: | Nb2O5 nH2 colloid Ba(Mg1/3Nb2/3)O3 nanopowder sol-gel processing microwave Q-factor |
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