Electrical noise in n- and p-type Ag[sub 2]Te

Jiang, L.; Nowak, E. R.
July 2003
Applied Physics Letters;7/21/2003, Vol. 83 Issue 3, p503
Academic Journal
The relatively large and linear magnetoresistance found in nonstoichiometric silver chalcogenides makes them attractive candidates for field sensing applications. We report on the intrinsic electrical noise in bulk, polycrystalline Ag[SUB2 + δ]Te. Low-frequency noise is due to resistance fluctuations having a 1/f -like power spectrum. The temperature dependence of the noise magnitude and its spectral slope indicate thermally activated kinetics that we attribute to some form of charge trapping-detrapping process occurring in or near the intergranular regions. The effective magnetic field noise in Ag[SUB2 + δ]Te is compared to other materials systems used in field sensing applications.


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