Mazierska, J., and Grabovickic, R. (1999) Surface resistance of YBa2Cu3O7 superconducting films on LaAlO3, NdGaO3 and Al2O3 substrates at varying microwave power levels. In: Proceedings of the 1999 Asia Pacific Microwave Conference: microwaves enter the 21st century (3) D2.2. pp. 622-625. From: APMC 1999: 1999 Asia Pacific Microwave Conference: microwaves enter the 21st century, 30 November - 3 December 1999, Singapore.

PDF (Published Version) - Published Version Restricted to Repository staff only

Abstract

Nonlinear performance of High Temperature Superconductors at high RF power levels is still one of major constrains in mass market applications of HTS films in cellular and PCS communication systems. We have measured surface resistance of YBa2Cu3O7 films on several substrates and compared their microwave power-handling capabilities. We have found that for high-quality YBCO films the losses of films on LaAlO3 substrate are the smallest followed by films on NdGaO3 and then on Al2 O3. Also the best quality films exhibited linear behaviour up to very high RF fields. Power-handling properties of YBCO on Al2O3 are improved by very good thermal conduction of sapphire. Best films deposited with the thermal co-evaporation and the off-axis sputtering techniques have been found to be of comparable quality.

Item ID:	28139
Item Type:	Conference Item (Research - E1)
ISBN:	978-0-7803-5761-7
Keywords:	lanthanum aluminate; neodymium gallate; alumina; cellular radio systems; electric resistance; evaporation; high temperature superconductors; lanthanum compounds; microwaves; neodymium compounds; oxide superconductors; personal communication systems; sputter deposition; yttrium barium copper oxides; superconducting films
Date Deposited:	07 Aug 2013 06:08
FoR Codes:	02 PHYSICAL SCIENCES > 0204 Condensed Matter Physics > 020404 Electronic and Magnetic Properties of Condensed Matter; Superconductivity @ 80% 09 ENGINEERING > 0906 Electrical and Electronic Engineering > 090699 Electrical and Electronic Engineering not elsewhere classified @ 20%
SEO Codes:	97 EXPANDING KNOWLEDGE > 970102 Expanding Knowledge in the Physical Sciences @ 80% 97 EXPANDING KNOWLEDGE > 970109 Expanding Knowledge in Engineering @ 20%
Downloads:	Total: 4
	More Statistics