Formation of tungsten bronze-type (Ba6-3xSm8+2x)(alpha)Ti18-yAlyO54 (alpha=1+y/36) solid solutions and microwave dielectric properties

被引：20

作者：

Mizuta, M ^{[1
]}

Uenoyama, K ^{[1
]}

Ohsato, H ^{[1
]}

Nishigaki, S ^{[1
]}

Okuda, T ^{[1
]}

机构：

[1] DAIKEN CHEM CO LTD,JOTO KU,OSAKA 573,JAPAN

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS | 1996年 / 35卷 / 9B期

关键词：

microwave dielectric resonator; BaO-Sm2O3-TiO2; system; tungsten bronze-type structure; BaO center dot Sm2O3 center dot 4TiO(2); 3BaO center dot 2Sm(2)O(3)center dot 9TiO(2) solid solutions;

D O I：

10.1143/JJAP.35.5065

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The composition range of tungsten bronze-type Ba6-3xSm8+2xTi18O54 solid solutions, which are excellent microwave dielectric resonators, has been extended to (Ba6-3xSm8+2x)(alpha)Ti18-yAlyO54(alpha=1+y/36) with the B-site substituted by Al. In this two-dimensional solid solution region, (Ba4.2Sm9.2)(alpha)Ti18-yAlyO54 (0 less than or equal to y less than or equal to 1.61), which includes the best end member composition (x=0.6) of Ba6-3xSm8+2xTi18O54 solid solutions, was selected for study of solid solutions and their dielectric properties. In the whole region of the solid solution formula, tungsten bronze-type solid solutions have been formed and the dielectric constants, Q . f values and tau(f) have been measured. epsilon(r) and tau(f) decreased as the amount of substituted Al increased. The decrease in tau(f) with Al substitution is expected to be especially large for dielectric materials with large positive tau f. These properties are discussed in terms of the structure.

引用

页码：5065 / 5068

页数：4

共 16 条

[1]

BOLTON RL, 1968, THESIS U ILLINOIS UR

[2]

Hakki B. W., 1960, IRE T MICROWAVE THEO, V8, P402, DOI DOI 10.1109/TMTT.1960.1124749

[3] Structural investigations on (BaxSr1-x)(ZryTi1-(y+delta)Ta-delta)O-3 dielectric resonator compounds used for microwave applications [J].

Joseph, J ;

Vimala, TM ;

Raju, KCJ ;

Murthy, VRK .

JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS, 1996, 35 (1A) :179-181

[4]

KAWASHIMA S, 1985, 87 ANN M AM CER SOC

[5] SYNTHESIS AND CRYSTAL-CHEMISTRY OF BAND2TI3O10, BAND2TI5O14, AND ND4TI9O24 [J].

KOLAR, D ;

GABERSCEK, S ;

VOLAVSEK, B ;

PARKER, HS ;

ROTH, RS .

JOURNAL OF SOLID STATE CHEMISTRY, 1981, 38 (02) :158-164

[6]

Kolar D., 1978, Berichte der Deutschen Keramischen Gesellschaft, V55, P346

[7]

MATVIENKO VP, 1984, GEMATOL TRANSFUZIOL, V29, P17

[8]

NISHIGAKI S, 1987, AM CERAM SOC BULL, V66, P1405

[9]

NISHIGAKI S, 1987, FC REP, V5, P413

[10] FORMATION OF SOLID-SOLUTIONS OF NEW TUNGSTEN BRONZE-TYPE MICROWAVE DIELECTRIC COMPOUNDS BA6-3XR8+2XTI18O54 (R=ND AND SM, 0-LESS-THAN-OR-EQUAL-TO-X-LESS-THAN-OR-EQUAL-TO-1) [J].

OHSATO, H ;

OHHASHI, T ;

NISHIGAKI, S ;

OKUDA, T ;

SUMIYA, K ;

SUZUKI, S .

JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS, 1993, 32 (9B) :4323-4326

← 1 2 →