|
OALib Journal期刊
ISSN: 2333-9721
费用：99美元
|
|
|
|
eu3+取代bi1.5mgnb1.5o7陶瓷的结构与介电性能
DOI: 10.3969/j.issn.1671-7627.2013.04.003, PP. 12-16
Keywords: bi1.5mgnb1.5o7,立方焦绿石,离子取代,介电性能
Abstract:
采用固相法制备bi1.5-xeuxmgnb1.5o7(x=0、0.1、0.2、0.3、0.4、0.5和0.6)陶瓷。采用x线衍射仪(xrd)、扫描电子显微镜(sem)和阻抗分析仪分别对陶瓷的相结构、显微结构和介电性能进行表征。结果表明:当eu3+取代量(x)较小(x≤0.5)时,所有组分的陶瓷样品均保持单一的焦绿石相;当x=0.6时,样品出现少量的eunbo4杂相。随着eu3+取代量的增加,陶瓷的介电常数逐渐减小,介电损耗先减小后增大,温度系数显著增大。当x=0.5时,1mhz下测得的介电常数为96,介电损耗为3.8×10-4,温度系数变成-12×10-6℃-1。因此,通过适当的eu3+取代可以获得适用于ⅰ类多层陶瓷电容器性能优异的介质材料。
| [1] | 陈凯,沈波,姚熹.bi基焦绿石介质材料研究进展[j].硅酸盐学报,2006,34(11):1374-1381.
|
| [2] | binhn,liuy,withersrl.thelocalcrystalchemistryanddielectricpropertiesofthecubicpyrochlorephaseinthebi2o3-m2+o-nb2o5(m2+=ni2+andmg2+)systems[j].journalofsolidstatechemistry,2007,180(1):549-557.
|
| [3] | mergena,özyoldaso.preparationanddielectricpropertiesofbi1.5zn1.0nb1.5o7andbi1.5zn0.92nb1.5o6.92pyrochloreceramics[j].ceramicssilikaty,2010,54(1):31-37.
|
| [4] | xuqh,yangtq,qiaohw,etal.dielectricpropertiesof(bi1.3re0.2)znnb1.5o7(re=la,pr,nd,sm,eu,yander)ceramics[j].ferroelectrics,2007,356:67-71.
|
| [5] | gaolb,jiangsw,liyr.effectsofgrowthconditionsonstructureanddielectricpropertiesofbismuth-magnesiumniobatethinfilms[j].physicsprocedia,2012,32:340-344.
|
| [6] | subramanianma,aravamudang,subbaraogv.oxidepyrochlores:areview[j].progressinsolidstatechemistry,1983,15(2):55-143.
|
| [7] | valantm,daviespk.crystalchemistryanddielectricpropertiesofchemicallysubstituted(bi1.5znnb1.5)o7andbi2(zn2/3nb4/3)o7pyrochlores[j].journaloftheamericanceramicsociety,2000,83(8):147-153.
|
| [8] | 关振铎,张太中,焦金生.无机材料物理性能[m].北京:清华大学出版社,1992.
|
| [9] | 陆佩文.无机材料科学基础[m].武汉:武汉理工大学出版社,1996.
|
| [10] | shannnrd.dielectricpolarizabilitiesofionsinoxidesandflourides[j].journalofappliedphysics,1993,73(1):348-366.
|
| [11] | levini,amostg,ninojc,etal.structuralstudyofanunusualcubicpyrochlorebil.5zn0.92nb1.5o6.92[j].journalofsolidstatechemistry,2002,168(12):69-72.
|
| [12] | withersrl,welberrytr,eurssonak,etal.localcrystalchemistry,inducedstrainandshortrangeorderinthecubicpyrochlore(bi1.5-δzn0.5-δ)(zn0.5-γnb1.5-δ)o7-1.5α-β-γ-2.5δ(bzn)[j].journalofsolidstatechemistry,2004,177(7):231-244.
|
| [13] | 周焕福.(bi1.5zn1.0nb1.5)o7与(bi1.5zn0.5)(nb0.5ti1.5)o7陶瓷的制备及改性[d].洛阳:河南科技大学,2005.
|
| [14] | sirotinkinvp,bushaa.preparationanddielectricpropertiesofbi1.5mnb1.5o7(m=cu,mg,mn,ni,zn)pyrochloreoxides[j].inorganicmaterials,2003,39(9):974-977.
|
| [15] | mergena,zorluh,özdemirm,etal.dielectricpropertiesofsm,ndandfedopedbi1.5zn0.92nb1.5o6.92pyrochlores[j].ceramicsinternational,2011,37(5):37-42.
|
| [16] | zhangml,wangh,yaox.effectofcasubstitutiononstructureanddielectricpropertiesofbismuth-basedmicrowaveceramics[j].journalofelectroceramics,2008,21:461-464.
|
| [17] | duhl,yaox.effectsofsrsubstitutionondielectriccharacteristicsinbi1.5znnb1.5o7ceramics[j].materialsscienceandengineeringb,2003,99:437-440.
|
| [18] | jiangsw,liyr,lirg,etal.dielectricpropertiesandtunabilityofcubicpyrochlorebi1.5mgnb1.5o7thinfilms[j].appliedphysicsletters,2009,94(16):162908-162911.
|
| [19] | canndp,randallca,shrouttr.investigationofthedielectricpropertiesofbismuthpyrochlores[j].solidstatecommunications,1996,100(7):529-534.
|
| [20] | ninojc,lanaganmt,randallca.dielectricrelaxationinbi2o3-zno-nb2o5cubicpyrochlore[j].journalofappliedphysics,2001,89(8):4512-4516.
|
Full-Text
|
|
Contact Us
service@oalib.com QQ:3279437679 
WhatsApp +8615387084133
|
|
