Telegraph noise in silver-Permalloy giant magnetoresistance test structures

We report noise data for discontinuous Ni/sub 82/Fe/sub 18//Ag multilayer test structures. Examination of the noise data for this material indicates that random telegraph fluctuator (RTF) noise of the resistance is the predominant noise source. Analysis of the RTF noise in these structures presents an opportunity to estimate magnetic domain or magnetic cluster strengths and the domain-domain interactions.