Noise in Sodium Beta Alumina Crystals.

reportActive / Technical Report | Accession Number: ADA156025 | Open PDF

Abstract:

Experimental current noise spectra for single crystal sodium beta alumina are essentially identical to those previously reported for polycrystalline ceramic specimens. The measured noise power is proportional to the square of the dc sample current and varies as 1.5f, which suggests conductivity fluctuations arising from diffusion of the mobile ions. Only a small fraction of the mobile ions appear to participate in the diffusion noise process and the number is thermally activated with an activation energy of 0.8eV, in agreement with data from ceramic specimens. Additional keywords diffusion noise superionic conductors experimental data. Author.

Author(s):
Brophy, J. J. ; Smith, S. W.
Author Organization(s):
UTAH UNIV SALT LAKE CITY DEPT OF PHYSICS
Descriptive Note:
Technical rept.,
Pagination:
0014

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
TR-7
Contract/Grant Number(s):
N00014-82-K-0603
 Subject Terms
Joint Capability Areas:
JCA_6.3.3_Spectrum Management; JCA_6.3_Net Management; JCA_6_Net Centric; JCA_1.2_Force Preparation; JCA_1_Force Support; JCA_1.2.3_Educating
Communities of Interest:
Ground and Sea Platforms
Descriptor(s):
*CERAMIC MATERIALS, *NOISE(ELECTRICAL AND ELECTROMAGNETIC), IONS, MOBILITY, SODIUM, POWER SPECTRA, CRYSTALS, ALUMINUM OXIDES, DIFFUSION, POLYCRYSTALLINE
Field(s)/Group(s):
Ceramics, Refractories and Glass, Electricity and Magnetism
Keyword(s):
Superionic conductors
Report Date:
1985 Sep 01