TY - JOUR
T1 - Effect of MnCO 3 doping on the dielectric and tunable properties of BSTO/MgO composite for phased array antennas
AU - Yang, Chunxia
AU - Zhou, Hongqing
AU - Liu, Min
AU - Qiu, Tai
PY - 2007/9
Y1 - 2007/9
N2 - Undoped and MnCO 3 doped (0.3, 0.5, 1, 2mol%) Ba 0.55 Sr 0.45TiO 3/MgO composites were prepared by conventional ceramic processing method and their structural, surface morphological, tunable properties and their dielectric properties at low and microwave frequencies were extensively investigated. The results indicate that the addition of MnCO 3 slightly decreases the average grain size. The proper doping of MnCO 3 can dramatically improve the properties of Ba 0.55Sr 0.45 TiO 3/MgO composite with lower dielectric loss and higher tunability. For 0.5mol% MnCO 3 doped samples, the microwave loss at 4.19 GHz is 2.91 × 10 -3 and the value of tunability is 7.4% with the external DC field 2 kV mm -1, which presented the best properties and can basically meet the requirements of phased array applications.
AB - Undoped and MnCO 3 doped (0.3, 0.5, 1, 2mol%) Ba 0.55 Sr 0.45TiO 3/MgO composites were prepared by conventional ceramic processing method and their structural, surface morphological, tunable properties and their dielectric properties at low and microwave frequencies were extensively investigated. The results indicate that the addition of MnCO 3 slightly decreases the average grain size. The proper doping of MnCO 3 can dramatically improve the properties of Ba 0.55Sr 0.45 TiO 3/MgO composite with lower dielectric loss and higher tunability. For 0.5mol% MnCO 3 doped samples, the microwave loss at 4.19 GHz is 2.91 × 10 -3 and the value of tunability is 7.4% with the external DC field 2 kV mm -1, which presented the best properties and can basically meet the requirements of phased array applications.
UR - http://www.scopus.com/inward/record.url?scp=34347352285&partnerID=8YFLogxK
U2 - 10.1007/s10854-006-9094-3
DO - 10.1007/s10854-006-9094-3
M3 - 文章
AN - SCOPUS:34347352285
SN - 0957-4522
VL - 18
SP - 985
EP - 989
JO - Journal of Materials Science: Materials in Electronics
JF - Journal of Materials Science: Materials in Electronics
IS - 9
ER -