Vacancy related defects in thin film Pb(ZrTi)O{sub 3} materials

Technical Report · Sat Dec 31 04:00:00 EST 1994

DOI:https://doi.org/10.2172/10121170· OSTI ID:10121170

Krishnan, A; Keeble, D J ^[1]; Ramesh, R ^[2]; Warren, W L; Tuttle, B A ^[3]; Pfeffer, R L ^[4]; Nielsen, B; Lynn, K G ^[5]

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1. Michigan Technological Univ., Houghton, MI (United States). Dept. of Physics
2. Bell Communications, Red Bank, NJ (United States)
3. Sandia National Labs., Albuquerque, NM (United States)
4. Army Research Labs., Fort Monmouth, NJ (United States)
5. Brookhaven National Lab., Upton, NY (United States)

Positron annihilation techniques have been applied to characterize vacancy-related defects in ferroelectric thin film structures. Variable energy positron beam measurements were carried out on doped and undoped Pb(ZrTi)O{sub 3} (PZT) samples subjected to different post-deposition cool down and anneal conditions. The PZT was deposited by sol-gel with either with platinum or RuO{sub 2} electrodes, or by laser ablation with La{sub 0.5}Sr{sub 0.5}CoO{sub 3} electrodes. The RuO{sub 2} and La{sub 0.5}Sr{sub 0.5}CoO{sub 3} electrode samples showed a smaller S-parameter compared to those deposited with Pt electrodes consistent with an improved PZT layer quality. For laser ablated samples cooled in a reducing ambient an increase in S-parameter for both the PZT and La{sub 0.5}Sr{sub 0.5}CoO{sub 3} layers was observed indicating an increase in neutral or negatively charged open-volume defects.

• Research Organization: Brookhaven National Lab., Upton, NY (United States); Sandia National Labs., Albuquerque, NM (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: AC02-76CH00016; AC04-94AL85000
• OSTI ID: 10121170
• Report Number(s): BNL--60717; CONF-941144--65; ON: DE95007696; GB0103012
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360202
665100
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
COBALT OXIDES
CRYSTALLIZATION
EXPERIMENTAL DATA
FERROELECTRIC MATERIALS
LANTHANUM OXIDES
NUCLEAR TECHNIQUES IN CONDENSED MATTER PHYSICS
PZT
RUTHENIUM OXIDES
STRONTIUM OXIDES
STRUCTURE AND PHASE STUDIES
VACANCIES