𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Structural and morphological properties of in-situ PLD YBCO/STO/YBCO trilayer

✍ Scribed by T. Petrisor; V. Boffa; F. Fabbri; D. Neri; A. Montone; M. Krasnowski

Publisher
Elsevier Science
Year
1997
Tongue
English
Weight
673 KB
Volume
21
Category
Article
ISSN
0749-6036

No coin nor oath required. For personal study only.

✦ Synopsis

Epitaxial YBCO/STO/YBCO trilayers have been grown on (100) SrTiO 3 substrates by insitu PLD technique. The resulting trilayer consists of 80 nm thickness YBCO bottom and top film, respectively and a 33 nm thickness STO interlayer. The x-ray measurements show that both the YBCO and STO films were epitaxially grown with c-and a-axis, respectively perpendicular to the substrate surface. The rocking curve of the (005) YBCO peak has a FWHM of 0.36 • , indicating a small mosaic spread of these films. The SEM micrographs of the YBCO top layer have revealed that the surface exhibits two kinds of irregularities: voids and droplets. The voids have a circular shape with an average diameter of about 200 nm, while the droplets have a nearly spherical one with about one micron in diameter and a density of 10 7 cm -2 . TEM analysis have not revealed the pinholes or short circuits in the trilayer structure. The crystalline structure of the interface between the substrate and the YBCO bottom layer was investigated by high resolution electron microscopy (HREM).

📜 SIMILAR VOLUMES

Dynamic mechanical properties and morpho
Dynamic mechanical properties and morphological structure of PS/EPDM blends prepared by in situ-polymerization of styrene
✍ Emerson Lourenço; Maria do Carmo Gonçalves; Maria Isabel Felisberti 📂 Article 📅 2009 🏛 John Wiley and Sons 🌐 English ⚖ 713 KB

## Abstract PS/EPDM blends prepared by __in situ__‐polymerization of styrene in the presence of EPDM are immiscible and show two phases. Furthermore, the dynamic mechanical behavior of injected specimens is quite different from that of noninjected blends. This is attributed to the differences in mo

Structure, Morphology and Properties of
Structure, Morphology and Properties of a Novel Molecular Composite by In-Situ Blending of Anionic Polyamide 6 with a Polyamide Copolymer Containing Rigid Segments
✍ Xiaochun Wang; Guisheng Yang; Qiang Zheng 📂 Article 📅 2007 🏛 John Wiley and Sons 🌐 English ⚖ 297 KB

## Abstract Molten caprolactam, in which a polyamide copolymer (HPN) containing rigid segments was dissolved, was polymerized by means of anionic ROP to in produce polyamide (PA, nylon) 6 blends with HPN in situ. A novel molecular composite was achieved in which toughness and strength were simultan