System for Investigating Superconducting Films with Surface Acoustic Waves Down to 4.5 Millikelvin and Up to 4 GHz.
Abstract
A system for investigating superconducting films with surface acoustic waves down to 4.3 millikelvin up to frequencies of 4 GHz and up to magnetic fields of 95 K Gauss has been ordered, received and assembled. A dilution refrigerator has been installed in a new laboratory. It has been tested in place down to 4.3 millikelvin. The refrigerator has a top loading probe with four interchangeable slugs which can be used for different millikelvin temperature experiments. Each slug has 13 electrical leads which can be connected at millikelvin temperatures. A superconducting magnet has been obtained which has been tested up to 95 K Gauss in conjunction with a helium lambda tip. All the parts for an automatic ultrasonic attenuation and velocity system in the frequency range of 10 MHz have been ordered and assembled. Parts for the submicron photolithography subsystem required to reproduce masks with linewidths of 0.3 u which will be used for making interdigital electrodes which will act as transducers to launch surface acoustic waves in the GHz range have been received and assembled.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 14, 1985
- Accession Number
- ADA174910
Entities
People
- Moises Levy
Organizations
- University of Wisconsin–Milwaukee