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High-quality-factor neodymium niobate ceramic prepared by replacing niobium ion with stibium ion
The invention discloses high-quality-factor neodymium niobate ceramic prepared by replacing a niobium ion with a stibium ion. The ceramic comprises Nd(Nb1-xSbx)O4, wherein the mole number x is greater than 0 and less than or equal to 0.1. A preparation method of the ceramic comprises the steps of blending raw materials Nd2O3, Nb2O5 and Sb2O5 according to a chemical formula, performing ball milling, drying at 80-130 DEG C, performing sieving, calcinating for 4h at 900-1000 DEG C, performing secondary ball milling, pelleting and sieving, performing compression to form a blank body, sintering at 1225-1275 DEG C, and preparing the neodymium niobate ceramic. According to the ceramic, the stibium ion replaces Nb of a B site in NdNbO4; a dielectric constant of the prepared NdNbO4 ceramic is 20.6; a temperature coefficient of resonance frequency reaches -23.1ppm/DEG C; and a maximum quality factor is 73200GHz. The ceramic is simple in preparation technology and environment-friendly in process, and is a promising microwave dielectric material.
High-quality-factor neodymium niobate ceramic prepared by replacing niobium ion with stibium ion
The invention discloses high-quality-factor neodymium niobate ceramic prepared by replacing a niobium ion with a stibium ion. The ceramic comprises Nd(Nb1-xSbx)O4, wherein the mole number x is greater than 0 and less than or equal to 0.1. A preparation method of the ceramic comprises the steps of blending raw materials Nd2O3, Nb2O5 and Sb2O5 according to a chemical formula, performing ball milling, drying at 80-130 DEG C, performing sieving, calcinating for 4h at 900-1000 DEG C, performing secondary ball milling, pelleting and sieving, performing compression to form a blank body, sintering at 1225-1275 DEG C, and preparing the neodymium niobate ceramic. According to the ceramic, the stibium ion replaces Nb of a B site in NdNbO4; a dielectric constant of the prepared NdNbO4 ceramic is 20.6; a temperature coefficient of resonance frequency reaches -23.1ppm/DEG C; and a maximum quality factor is 73200GHz. The ceramic is simple in preparation technology and environment-friendly in process, and is a promising microwave dielectric material.
High-quality-factor neodymium niobate ceramic prepared by replacing niobium ion with stibium ion
ZHANG PING (Autor:in) / ZHAO YONGGUI (Autor:in)
22.07.2015
Patent
Elektronische Ressource
Englisch
IPC:
C04B
Kalk
,
LIME
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