MICROWAVE LOSSES IN STRONTIUM TITANATE ABOVE THE PHASE TRANSITION
Abstract
HE MICRO AVE LOSSES IN BOTH PURE AN DOPED SrTiO HAVE B EN INVESTIGATED AS A FUNCTION OF FREQUENCY AND TEMPER TURE. The loss tangent is proportional to frequency in the rang 3 - 36 kMc. Above the phase transition at 110 K, the temperature dep ndence of the loss tangent is well r presen ed by tan delta equals 1/T- SUB C ALPHA b T + gamma (sq T)), where the Curie tempera ure, T sub c equals 37 K. T HE PARA ETER ALPHA IS SHOWN TO BE DETERMI BY L T IC IMPERF CTIONS A D V IS E FOR PURE SINGLE CRYSTALLINE MATERI L H P R M TER BE A A D GAMMA AR I RIN IC PROPERTIE OF THE PERFECT LATTICE AND AR ES EN I LLY UNAFF CTED BY IMPERF C ION I T IS SUGGESTED THAT BET ND GA A RE R L TED TO IR FOURTH ORDER A HARMONICITY TERMS IN THE IN ERIO IC PO ENTIAL. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 01, 1961
- Accession Number
- AD0268850
Entities
People
- G. Rupprecht
- R.o. Bell
Organizations
- RTX