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Digitale Medien

Optimized PZT Thin Films for Pyroelectric IR Detector Arrays (1999)

Bruchhaus, Rainer ; Pitzer, Dana ; Schreiter, Matthias ; [weitere]

Springer

Journal of electroceramics 3 (1999), S. 151-162

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ISSN: 1573-8663

Schlagwort(e): PZT thin films ; PZT composition ; multi target sputtering ; stress ; electrical properties ; self-polarization

Quelle: Springer Online Journal Archives 1860-2000

Thema: Elektrotechnik, Elektronik, Nachrichtentechnik , Maschinenbau

Notizen: Abstract A planar multi target sputtering technology was used to deposit highly (111) oriented Pb(Zr x Ti1−x )O3 (PZT) thin films with x ranging from 0–0.6. The preparation of a stable Pt/ZrO2 electrode is described and analyzed in terms of stress and stress-temperature behavior. The PZT films with low Zr content are under compressive stress after deposition. The dielectric constant and loss peaks occur at a composition close to the morphotropic phase boundary. Films on the tetragonal side of the phase diagram with a Zr content up to about 25% exhibited a strong self polarization and strong voltage shifts in the C(V) curves. High pyroelectric coefficients of 〉2×10−4 C/(m2K) have been measured on these films without additional poling. The self polarization fades out with increasing Zr content. The low values of the pyroelectric coefficient for the PZT film with 60% Zr is discussed in terms of the possible crystallographic variants after distortion and the tensile stress state during the phase transition. Based on the systematic study of stress and electrical properties of PZT films with a wide range of composition presented in this paper, films with a Zr content up to about 25% turned out to give the best properties for the use in pyroelectric detector arrays.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1023/A:1009995126986

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Digitale Medien

Elektrochemische Synthesen, XX. Die Synthese von S4N4 und (S5N5)Cl (1984)

Fritz, Heinz P. ; Bruchhaus, Rainer

Weinheim : Wiley-Blackwell

Berichte der deutschen chemischen Gesellschaft 117 (1984), S. 1920-1925

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ISSN: 0009-2940

Schlagwort(e): Chemistry ; Inorganic Chemistry

Quelle: Wiley InterScience Backfile Collection 1832-2000

Thema: Chemie und Pharmazie

Beschreibung / Inhaltsverzeichnis: Electrochemical Syntheses, XX1). The Syntheses of S4N4 and (S5N5)ClThe cathodic reduction of S3N3Cl3 in 0.1 M (Ph3P=N=PPh3)[PF6]/CH2Cl2 or 0.15 M (Bu4N)-[BF4]/CH2Cl2 yields S4N4 at room temperature and (S5N5)Cl at - 20°C with current efficiencies of 90% and 49%, respectively.

Notizen: Die kathodische Reduktion von S3N3Cl3 in 0.1 M (Ph3P=N=PPh3)[PF6]/CH2Cl2 oder 0.15 M (Bu4N)[BF4]/CH2Cl2 ergibt bei Raumtemperatur S4N4 und bei - 20°C (S5N5)Cl mit Stromausbeuten von 90% bzw. 49%.

Zusätzliches Material: 1 Ill.