Abstract: An electronic component 100 which includes: a dielectric body (a ceramic substrate) 110 containing a dielectric ceramic composition containing Al2TeO5 as a main component; and terminals 120 each provided on a pair of opposed side surfaces of the dielectric body 110 is provided.

Abstract: An electronic component 100 which includes: a dielectric body (a ceramic substrate) 110 containing a dielectric ceramic composition containing Al2TeO5 as a main component; and terminals 120 each provided on a pair of opposed side surfaces of the dielectric body 110 is provided.

Abstract: A sintering temperature can be lowered to 1,200° C. by adding from 15% by weight or more to 35% by weight or less of rutile-type titanium dioxide into forsterite. By carrying out sintering at such a low temperature, a sintered product can be obtained in which sintering was carried out while retaining the respective crystal phases of the forsterite and rutile-type titanium dioxide. Such a sintered product is an excellent high-frequency ceramic composition, wherein the high quality factor Q·f value derived from forsterite is hardly impaired, and, the absolute value of the temperature coefficient ?f is controlled to 30 ppm/° C. or less by rutile-type titanium dioxide.

Abstract: Sintering temperature can be lowered to 1,200° C. by adding from 15% by weight or more to 35% by weight or less of rutile-type titanium dioxide into forsterite. By carrying out sintering at such a low temperature, a sintered product can be obtained in which sintering was carried out while retaining the respective crystal phases of the forsterite and rutile-type titanium dioxide. Such a sintered product is an excellent high-frequency ceramic composition, wherein the high quality factor Q•f value derived from forsterite is hardly impaired, and, the absolute value of the temperature coefficient ?f is controlled to 30 ppm/° C. or less by rutile-type titanium dioxide.

Abstract: Various high quality microwave dielectric composite compositions are prepared by replacing a part of Ba, La or Ti with another element in a dielectric material represented by BanLa4Ti3+nO12+3n. A first embodiment thereof comprises a ceramic composition represented by (Ba1?xAx)nLa4Ti3+nO12+3n, wherein A is an alkaline earth metal element except Ba, and 0.5<n<5 and 0<x<0.5, which is a composite composition being homologous as the former dielectric material and having a chemical formula obtained by replacing a part of Ba with an alkaline earth metal element except Ba. Similarly, a part of La and a part of Ti can be replaced with a rare earth element except La and an element except Ti, respectively. The above various microwave dielectric composite compositions can be used for adjusting microwave dielectric characteristics of a material through replacing a part of a constituent element with another element and thus increasing the variety of the material for a dielectric resonator.

Abstract: A first inventive microwave dielectric composition comprises a ceramic composition represented by AnR4Ti3+nO12+3n, where a is an alkaline earth metal element, R is a rare earth element and characterized in that a case satisfying A=Ba and a case of R=La is excluded and the compositional ratio n=1,2 or 4. A second inventive microwave dielectric composition comprises a ceramic composition represented by AXR4Ti3+XO12+3X, where A is an alkaline earth metal element, R is a rare earth element and characterized in that the compositional ratio X is within a range of 0.5<X<5 (excluding X=1,2, 4). A variety of small microwave dielectric resonators having excellent transmitting/receiving characters can be mass produced inexpensively from that composition.

Abstract: Various high quality microwave dielectric composite compositions are prepared by replacing a part of Ba, La or Ti with another element in a dielectric material represented by BanLa4Ti3+nO12+3n. A first embodiment thereof comprises a ceramic composition represented by (Ba1−xAx)nLa4Ti3+nO12+3n, wherein A is an alkaline earth metal element except Ba, and 0.5<n<5 and 0<x<0.5, which is a composite composition being homologous as the former dielectric material and having a chemical formula obtained by replacing a part of Ba with an alkaline earth metal element except Ba. Similarly, a part of La and a part of Ti can be replaced with a rare earth element except La and an element except Ti, respectively.

Abstract: A first inventive microwave dielectric composition comprises a ceramic composition represented by AnR4Ti3+nO12+3n, where a is an alkaline earth metal element, R is a rare earth element and characterized in that a case satisfying A=Ba and a case of R=La is excluded and the compositional ratio n=1,2 or 4.