NDLI: Is Electrical 1/f Noise in Tunneling Magnetoresistive Heads a Form of Equilibrium Noise?

Content Provider	IEEE Xplore Digital Library
Author	Klaassen, K.B. Taratorin, A.M.
Copyright Year	1965
Abstract	Tunneling magnetoresistive (TMR) heads exhibit 1/f noise at the low end of their frequency range. A considerable fraction of this noise is still present when the junctions are magnetically saturated. This remnant electrical 1/f noise is much larger than the 1/f noise observed in small conductors of similar size and resistance, which has been shown to be caused by spontaneous fluctuations in the equilibrium resistance. This paper reports measurements on TMR heads to determine if the observed electrical 1/f noise is also present in the case of thermodynamic equilibrium, i.e., when the head is in thermal equilibrium and electrically unbiased. Reported are spectral noise measurements of the thermal (Johnson) noise which, according to the fluctuation-dissipation theorem, should become modulated in noise power by any resistance fluctuations. Since we found no 1/f noise in the observed unbiased TMR spectra, it was concluded that the electrical 1/f noise is due to resistance fluctuations caused by, and proportional to the electrical current through the junction. This noise is absent for zero current
Sponsorship	IEEE Magnetics Society
Starting Page	2193
Ending Page	2195
Page Count	3
File Size	329280
File Format	PDF
ISSN	00189464
Volume Number	43
Issue Number	6
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2007-06-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Tunneling magnetoresistance Magnetic heads Magnetic noise Electric resistance Fluctuations Noise measurement Thermal resistance Frequency Saturation magnetization Conductors tunnel junction noise 1/f noise excess noise low-frequency noise
Content Type	Text
Resource Type	Article
Subject	Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Electrical Low-Frequency Noise in Tunneling Magnetoresitive Heads: Phenomena and Origins

Broad-band noise spectroscopy of giant magnetoresistive read heads

Low-Frequency Noise in MgO Magnetic Tunnel Junctions: Hooge's Parameter Dependence on Bias Voltage

Amplitude and Phase Distributions of Magnetization in Tunneling Magnetoresistive Heads

Hard Bias Effect on Magnetic Noise in Different Types of Tunnel Magnetoresistive Heads

Temperature Dependence of Thermally Activated Ferromagnetic Resonance in Tunneling Magnetoresistive Heads

Angular Dependence of Magnetoresistance During Magnetization Reversal on Magnetic Tunnel Junction Ring

Spin-Torque Effect on Thermally Excited Magnetization Fluctuation Noise in Tunneling Magnetoresistive Read Heads

Measurement and analysis of noise sources in giant magnetoresistive sensors up to 6 GHz

Is Electrical 1/f Noise in Tunneling Magnetoresistive Heads a Form of Equilibrium Noise?

Similar Documents

Electrical Low-Frequency Noise in Tunneling Magnetoresitive Heads: Phenomena and Origins

Broad-band noise spectroscopy of giant magnetoresistive read heads

Low-Frequency Noise in MgO Magnetic Tunnel Junctions: Hooge's Parameter Dependence on Bias Voltage

Amplitude and Phase Distributions of Magnetization in Tunneling Magnetoresistive Heads

Hard Bias Effect on Magnetic Noise in Different Types of Tunnel Magnetoresistive Heads

Temperature Dependence of Thermally Activated Ferromagnetic Resonance in Tunneling Magnetoresistive Heads

Angular Dependence of Magnetoresistance During Magnetization Reversal on Magnetic Tunnel Junction Ring

Spin-Torque Effect on Thermally Excited Magnetization Fluctuation Noise in Tunneling Magnetoresistive Read Heads

Measurement and analysis of noise sources in giant magnetoresistive sensors up to 6 GHz

Is Electrical 1/f Noise in Tunneling Magnetoresistive Heads a Form of Equilibrium Noise?