SANTA BARBARA, Calif., Feb. 9, 2011 (GLOBE NEWSWIRE) -- Superconductor Technologies, Inc. (Nasdaq:SCON) ("STI"), a world leader in the development and production of high temperature superconducting (HTS) materials and associated technologies, today announced cutting edge high-magnetic-field test results for its second generation (2G) HTS wire. In an ongoing collaborative research and development agreement (CRADA) with Los Alamos National Laboratory (LANL), STI and LANL produced a 2G HTS wire sample that demonstrates exceptional in-field critical current values. This world-class current-carrying capability in high magnetic field demonstrates the effectiveness of STI's HTS fabrication process at producing 2G HTS wire for demanding applications such as superconducting fault current limiters and high-power wind turbine generators. STI produced a 2G HTS coated conductor sample on a LANL template that exhibits a minimum critical current of 228 amperes (A) at a temperature of 65 kelvin (K) in an applied magnetic field of 3 tesla (T), corresponding to 256 A per centimeter (cm)-width. This critical current is the minimum value as a function of magnetic field angle. The maximum critical current of this sample at 65 K exceeded 404 A per cm-width for a 3-T magnetic field oriented parallel to the coated conductor surface; this latter current value was limited by the amount of current supplied by the measurement apparatus. In a 5-T field at 65 K, the coated conductor exhibited a minimum critical current of 143 A per cm-width and a maximum critical current of 322 A per cm-width. The measurements were performed at LANL's Superconductivity Technology Center in Los Alamos, NM. Dr. Brian Moeckly, Director of Materials Research and Development at STI, commented: "Achievement of this level of current-carrying capability in high magnetic field is a critical milestone in our development of 2G HTS wire. In addition, we fabricated this sample using a straightforward HTS structure; we did not need to add additional elements or so-called artificial pinning centers to the coated conductor to obtain this result. While these measurements were performed on a small sample, we believe that the outstanding properties of this wire can be maintained upon scale-up of our processes to long-length 2G HTS wire production."
Dr. Ken Marken, Superconductivity Technology Center Leader at LANL, added: "We are excited to verify these test results that confirm that STI's HTS deposition process produces 2G HTS wire with state-of-the-art superconducting properties."STI's strategic 2G HTS wire program is utilizing its specialized HTS material deposition processes and volume manufacturing expertise to produce energy-efficient, cost-effective, and high-performance 2G HTS wire for next generation power applications. STI fabricates 2G HTS wire using its proprietary deposition technology known as reactive coevaporation with cyclic deposition and reaction (RCE-CDR). This specific sample of 2G HTS wire is 8.9 millimeters wide x 4.4 microns thick and was grown on a 1-cm-wide x 4-cm-long template provided by Los Alamos National Laboratory (LANL). This simplified template contained a reduced number of layers compared to competing 2G HTS wire technologies. The template consisted of a non-magnetic nickel-alloy substrate followed by layers of only two materials: a solution-deposition planarization (SDP) layer and an ion-beam assisted deposition (IBAD) layer. An advantage of the RCE-CDR technology is that it allows high-performance 2G HTS wire to be grown on these simplified templates. STI believes that this simplified template platform combined with STI's RCE-CDR process results in a superior high-yield, low-cost 2G HTS wire technology. About Superconductor Technologies Inc. (STI) Superconductor Technologies, Inc., headquartered in Santa Barbara, CA, has been a world leader in HTS materials since 1987, developing more than 100 patents as well as proprietary trade secrets and manufacturing expertise. For more than a decade, STI has been providing innovative interference elimination and network enhancement solutions to the commercial wireless industry. The company is currently leveraging its key enabling technologies, including RF filtering, HTS materials, and cryogenics to develop energy efficient, cost-effective and high performance second generation (2G) HTS wire for existing and emerging power applications, to develop applications for advanced RF wireless solutions and innovative adaptive filtering, and for government R&D. Superconductor Technologies, Inc.'s common stock is listed on the NASDAQ Capital Market under the ticker symbol SCON. For more information about STI, please visit http://www.suptech.com. The Superconductor Technologies Inc. logo is available at http://www.globenewswire.com/newsroom/prs/?pkgid=3963 About Los Alamos National Laboratory ( www.lanl.gov ) Los Alamos National Laboratory, a multidisciplinary research institution engaged in strategic science on behalf of national security, is operated by Los Alamos National Security, LLC, a team composed of Bechtel National, the University of California, The Babcock & Wilcox Company, and URS for the Department of Energy's National Nuclear Security Administration.
Los Alamos enhances national security by ensuring the safety and reliability of the U.S. nuclear stockpile, developing technologies to reduce threats from weapons of mass destruction, and solving problems related to energy, environment, infrastructure, health, and global security concerns.The LANL Superconductivity Technology Center (STC) coordinates a multidisciplinary program for research, development, and technology transfer in the area of high-temperature superconductivity. The focus of the STC is on effective collaborations with American industry, universities, and other national laboratories to develop electric power and electronic device applications of high-temperature superconductors.
|For Los Alamos National Laboratory|
|James Rickman, LANL Communications Office|