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Titolo:
Effect of electrode materials on lead lanthanum zirconate titanate with heating under reduced atmosphere
Autore:
Kondo, M; Maruyama, K; Kurihara, K;
Indirizzi:
Fujitsu Labs Ltd, Atsugi 2430197, Japan Fujitsu Labs Ltd Atsugi Japan 2430197 su Labs Ltd, Atsugi 2430197, Japan
Titolo Testata:
JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS
fascicolo: 9B, volume: 40, anno: 2001,
pagine: 5647 - 5652
SICI:
0021-4922(200109)40:9B<5647:EOEMOL>2.0.ZU;2-K
Fonte:
ISI
Lingua:
ENG
Soggetto:
CAPACITORS; H-2;
Keywords:
PLZT; platinum; iridium oxide; thermal analysis;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
--discip_EC--
Citazioni:
11
Recensione:
Indirizzi per estratti:
Indirizzo: Kondo, M Fujitsu Labs Ltd, 10-1 Morinosato Wakamiya, Atsugi 2430197, JapanFujitsu Labs Ltd 10-1 Morinosato Wakamiya Atsugi Japan 2430197 n
Citazione:
M. Kondo et al., "Effect of electrode materials on lead lanthanum zirconate titanate with heating under reduced atmosphere", JPN J A P 1, 40(9B), 2001, pp. 5647-5652

Abstract

To understand the ferroelectricity degradation of ferroelectric random access memory (FeRAM) capacitor under hydrogen atmosphere, reactions between lead lanthanum zirconate titanate (PLZT) and the electrode materials, such as platinum (Pt) and iridium oxide (IrO2), were investigated by thermal analysis. The PLZT powder was decomposed by heating under Ar + 3%H-2 atmosphereat 1000 degreesC with lead (Pb) metal, PbO, ZrTiO4 and TiO2. The decomposed PLZT with Pb metal exhibited perovskite phase after annealing under air atmosphere at 1000 degreesC and no pyrochlore phase was observed. We found that Pt reacted with the Pb precipitated from PLZT by heating under Ar + 3%H-2 atmosphere. Consequently, a large amount of PbPt alloy and a small amount of PtPb4 alloy were formed. The formation temperature of the alloys was lower than the decomposition temperature of PLZT without Pt. Pt was directlyinvolved in the decomposition of PLZT. However, no alloys of Ir and Pb were formed in the mixture of PLZT and IrO2 under Ar + 3%H-2 atmosphere. The heat treatment of the mixture of PLZT and the electrode powders indicated that Pt promoted the decomposition of PLZT under Ar + 3%H-2 atmosphere and IrO2 reduced the rate of the decomposition.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 27/09/20 alle ore 19:17:11