TY - JOUR
T1 - Effects of MgO and Mg(OH)2 on phase formation and properties of strontium-doped MgTiO3 microwave dielectric ceramics
AU - Liou, Yi Cheng
AU - Yang, Song Ling
AU - Chu, Sheng Yuan
N1 - Funding Information:
This study was supported by the National Science Council of the Republic of China under Contract NSC 95-2221-E-168-015 .
PY - 2013
Y1 - 2013
N2 - The effects of MgO and Mg(OH) 2 on the phase formation and properties of 0.97MgTiO3-0.03SrTiO3 ceramics were investigated. MgTi2O5 formed in pellets added with MgO (MST) and disappeared in pellets added with Mg(OH)2 (MHST). Abnormal grain growth was observed in MHST due to different reactions during the heating process. Values of σr = 20-22.1, Q × f = 16,500-23,000 GHz and τ f =-5.2 to 4.1 ppm/°C and of σr = 17.3-17.7, Q × f = 31,300-48,600 GHz and σr =-9.1 to 0.9 ppm/°C were measured for MST and MHST, respectively. Lower er for MHST was caused by a lower density. Q × f increased and τf shifted to more negative values when Mg(OH)2 was used instead of MgO.
AB - The effects of MgO and Mg(OH) 2 on the phase formation and properties of 0.97MgTiO3-0.03SrTiO3 ceramics were investigated. MgTi2O5 formed in pellets added with MgO (MST) and disappeared in pellets added with Mg(OH)2 (MHST). Abnormal grain growth was observed in MHST due to different reactions during the heating process. Values of σr = 20-22.1, Q × f = 16,500-23,000 GHz and τ f =-5.2 to 4.1 ppm/°C and of σr = 17.3-17.7, Q × f = 31,300-48,600 GHz and σr =-9.1 to 0.9 ppm/°C were measured for MST and MHST, respectively. Lower er for MHST was caused by a lower density. Q × f increased and τf shifted to more negative values when Mg(OH)2 was used instead of MgO.
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U2 - 10.1016/j.jallcom.2013.04.111
DO - 10.1016/j.jallcom.2013.04.111
M3 - Article
AN - SCOPUS:84877819791
SN - 0925-8388
VL - 576
SP - 161
EP - 169
JO - Journal of Alloys and Compounds
JF - Journal of Alloys and Compounds
ER -