A study of vacancy-related defects in (Pb,La)(Zr,Ti)O3 thin films using positron annihilation

被引：6
作者：
Friessnegg, T [1 ]
Aggarwal, S
Nielsen, B
Ramesh, R
Keeble, DJ
Poindexter, EH
机构：
[1] Univ Maryland, College Pk, MD 20742 USA
[2] Brookhaven Natl Lab, Upton, NY 11793 USA
[3] Univ Dundee, Dundee DD1 4HN, Scotland
[4] USA, Res Lab, Adelphi, MD 20783 USA
来源：
IEEE TRANSACTIONS ON ULTRASONICS FERROELECTRICS AND FREQUENCY CONTROL | 2000年 / 47卷 / 04期
关键词：
D O I：
10.1109/58.852074
中图分类号：
O42 [声学];
学科分类号：
070206 ; 082403 ;
摘要：
The formation of vacancy-type defects in La-doped lead zirconate titanate (PLZT) thin films (Zr/Ti=20/80) was studied as a function of lanthanum doping and after cooling in an oxygen-reduced ambient. The changes in the Doppler-broadening S parameter are consistent with the progressive introduction of Ph-vacancies upon La-doping. Cooling of PLZT thin films with 0 and 10% La doping in 10(-5) Torr oxygen partial pressure after growth exhibits an increase in the density of vacancy-type defects compared to films cooled in 760 Torr. It is proposed that the defects formed are likely cation-oxygen vacancy complexes.
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页码：916 / 920
页数：5
相关论文
共 16 条
[1]   A STUDY OF PB VACANCIES AND PB-O VACANCY PAIRS IN DOPED PB0.85SR0.15(ZR0.55TI0.45)O3 CERAMICS BY POSITRON-ANNIHILATION [J].
DAI, GH ;
LU, PW ;
HUANG, XY ;
LIU, QS ;
XUE, WR .
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS, 1991, 2 (03) :164-170
[2]  
Dupasquier A., 1995, Positron spectroscopy of solids"
[3]   Metal ion and oxygen vacancies in bulk and thin film La1-xSrxCoO3 [J].
Friessnegg, T ;
Madhukar, S ;
Nielsen, B ;
Moodenbaugh, AR ;
Aggarwal, S ;
Keeble, DJ ;
Poindexter, EH ;
Mascher, P ;
Ramesh, R .
PHYSICAL REVIEW B, 1999, 59 (20) :13365-13369
[4]  
FRIESSNEGG T, 1999, P 11 IEEE INT S APPL, P147
[5]   Momentum distributions of electron-positron pairs annihilating at vacancy clusters in Si [J].
Hakala, M ;
Puska, MJ ;
Nieminen, RM .
PHYSICAL REVIEW B, 1998, 57 (13) :7621-7627
[6]   The Distribution of Vacancies in Lanthana-Doped Lead Titanate [J].
Hennings, D. ;
Haerdtl, K. H. .
PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE, 1970, 3 (02) :465-474
[7]   DEFECT STRUCTURE OF 8/65/35 PLZT AS DETERMINED BY KNUDSEN EFFUSION [J].
HOLMAN, RL .
FERROELECTRICS, 1976, 10 (1-4) :185-190
[8]   Vacancy defects in thin-film La0.5Sr0.5CoO3-δ observed by positron annihilation [J].
Keeble, DJ ;
Krishnan, A ;
Friessnegg, T ;
Nielsen, B ;
Madhukar, S ;
Aggarwal, S ;
Ramesh, R ;
Poindexter, EH .
APPLIED PHYSICS LETTERS, 1998, 73 (04) :508-510
[9]   Vacancy defects in (Pb, La)(Zr, Ti)O3 capacitors observed by positron annihilation [J].
Keeble, DJ ;
Nielsen, B ;
Krishnan, A ;
Lynn, KG ;
Madhukar, S ;
Ramesh, R ;
Young, CF .
APPLIED PHYSICS LETTERS, 1998, 73 (03) :318-320
[10]   IMPRINT AND OXYGEN DEFICIENCY IN (PB,LA)(ZR,TI)O-3 THIN-FILM CAPACITORS WITH LA-SR-CO-O ELECTRODES [J].
LEE, J ;
RAMESH, R ;
KERAMIDAS, VG ;
WARREN, WL ;
PIKE, GE ;
EVANS, JT .
APPLIED PHYSICS LETTERS, 1995, 66 (11) :1337-1339
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