| 1. Identity statement | |
| Reference Type | Journal Article |
| Site | marte3.sid.inpe.br |
| Holder Code | isadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S |
| Identifier | 6qtX3pFwXQZsFDuKxG/ymV2F |
| Repository | sid.inpe.br/marciana/2003/06.05.12.08 (restricted access) |
| Last Update | 2008:02.20.19.01.17 (UTC) administrator |
| Metadata Repository | sid.inpe.br/marciana/2003/06.05.12.08.40 |
| Metadata Last Update | 2018:06.06.03.57.01 (UTC) administrator |
| Secondary Key | INPE-11610-PRE/6992 |
| DOI | 10.4028/www.scientific.net/MSF.416-418.11 |
| ISSN | 1662-9752 |
| Citation Key | NonoCast:2003:MiStCr |
| Title | Microstructure study and crystalline phase formation on Nb2O5-Ba9Ti2O20 microwave resonators  |
| Project | TECAMB: Tecnologia ambiental / Comportamento mecânico em altas temperaturas de cerâmicas e /ou microestruturadas |
| Year | 2003 |
| Access Date | 2024, Apr. 28 |
| Secondary Type | PRE PI |
| Number of Files | 1 |
| Size | 122 KiB |
| 2. Context | |
| Author | 1 Nono, Maria do Carmo de Andrade 2 Castro, Pedro José de |
| Group | 1 LAS-INPE-MCT-BR 2 LAP-INPE-MCT-BR |
| Affiliation | 1 Instituto Nacional de Pesquisas Espaciais, Laboratório Associado de Sensores e Materiais (INPE.LAS) 2 Instituto Nacional de Pesquisas Espaciais, Laboratório Associado de Plasma (INPE.LAP) |
| Journal | Materials Science Forum. Advanced Powder Technology III Book Series |
| Volume | 416-418 |
| Pages | 11-16 |
| History (UTC) | 2004-11-29 12:02:03 :: marciana -> administrator :: 2007-04-03 17:07:15 :: administrator -> marciana :: 2008-02-20 19:01:17 :: marciana -> administrator :: 2008-06-09 16:55:59 :: administrator -> marciana :: 2013-02-01 14:42:31 :: marciana -> banon :: 2003 2013-02-07 13:43:03 :: banon -> administrator :: 2003 2018-06-06 03:57:01 :: administrator -> marciana :: 2003 |
| 3. Content and structure | |
| Is the master or a copy? | is the master |
| Content Stage | completed |
| Transferable | 1 |
| Content Type | External Contribution |
| Version Type | publisher |
| Keywords | MATERIALS PHYSICS Dielectric resonators Crystalline phases Microstructures Microwave measurements FÍSICA DE MATERIAIS Ressonador dielétrico Fase cristalina Microestruturas Medição de microondas |
| Abstract | We report on the development of barium nanotitanate (Ba2Ti9O20) dielectric resonators (DRs) for microwave applications and their characterization regarding ceramic and high-frequency dielectric properties. Those DRs should meet the requirements of the dielectric constant as well as the quality factor high values and frequency high stability; for application as local oscillator of an INPE Communication Satellite. The ceramic were prepared using suitable powder mixtures composed of 0.818 BaCO3-0.182 TiO2 without and with addition of some contents of Nb2O5 (0.1, 0.2 and 0.4 mol), compacted by isostatic pressing with 300 MPa and sintering at 1360 degreesC in appropriate atmosphere. The initial powders and the sintered ceramics were characterized by X-rays diffraction and scanning electronic microscopy. The values of dielectric constant, resonance frequency, loaded quality factor due to the dielectric losses, and coefficient of frequency variation with the temperature was obtained using a special metallic box for these measurements. The comparative analyses of these results showed that the Nb2O5 content increases the amount of the formed phase Ba2Ti9O20 and the ceramic densification degree. |
| Area | FISMAT |
| Arrangement 1 | urlib.net > BDMCI > Fonds > Produção anterior à 2021 > LABAS > Microstructure study and... |
| Arrangement 2 | urlib.net > BDMCI > Fonds > Produção anterior à 2021 > LABAP > Microstructure study and... |
| doc Directory Content | access |
| source Directory Content | there are no files |
| agreement Directory Content | there are no files |
| 4. Conditions of access and use | |
| Language | en |
| Target File | microstructure.pdf |
| User Group | administrator banon marciana |
| Visibility | shown |
| Copy Holder | SID/SCD |
| Read Permission | deny from all and allow from 150.163 |
| Update Permission | not transferred |
| 5. Allied materials | |
| Next Higher Units | 8JMKD3MGPCW/3ESR3H2 8JMKD3MGPCW/3ET2RFS |
| Dissemination | WEBSCI; PORTALCAPES. |
| Host Collection | sid.inpe.br/banon/2001/04.03.15.36 |
| 6. Notes | |
| Notes | Proceedings of the 4th International Latin-American Conference on Powder Technology, November 19-21, 2003, Guarujá – São Paulo, Brazil |
| Empty Fields | alternatejournal archivingpolicy archivist callnumber copyright creatorhistory descriptionlevel e-mailaddress electronicmailaddress format isbn label lineage mark mirrorrepository month nextedition number orcid parameterlist parentrepositories previousedition previouslowerunit progress readergroup resumeid rightsholder schedulinginformation secondarydate secondarymark session shorttitle sponsor subject tertiarymark tertiarytype typeofwork url |
| 7. Description control | |
| e-Mail (login) | marciana |
| update | |