NDLI: Current induced noise in CPP and CCP/CPP spin valve read heads

Content Provider	IEEE Xplore Digital Library
Author	Zhu, J. Xiaochun Zhu
Copyright Year	2005
Description	Author affiliation: Data Storage Syst. Center, Carnegie Mellon Univ., Pittsburgh, PA, USA (Zhu, J.; Xiaochun Zhu)
Abstract	A systematic micromagnetic modeling study on the spin transfer induced noise in CCP (current-confined-path )/CPP (current-perpendicular-to-plane) spin valve and magnetic tunnel junction (MTJ) heads is presented. Both CCP/CPP spin valve and MTJ read heads are modeled using previously developed micromagnetic model. Abutted permanent magnet longitudinal bias scheme is assumed. The Landau-Lifshitz-Gilbert equation is modified to include the spin transfer torque. The current-confined-path is modeled with randomly distributed conducting channels in the Cu interlayer of a CPP spin valve stack. Exact current distribution in the stack is solved by using a 3-dimensional resistors network model. The size and density of the channels are varied in the simulation study. Thermally excited magnetization gyro-motion is also included in the model. Random fields simulating the thermal excitation are added to the effective field in the spin-transfer modified LLG equation by applying the fluctuation-dissipation theorem. The narrow conducting channels in the CCP/CPP spin valve stack formed by the porous conducting layer significantly reduces the current threshold for spin transfer excited noise. It is also found that the noise characteristics strongly depend on the actual distribution of the narrow conducting channels and the size of these channels.
Sponsorship	Magnetics Soc. of Japan Magnetics Soc. of the IEEE
Starting Page	1227
Ending Page	1228
File Size	181775
Page Count	2
File Format	PDF
ISBN	0780390091
DOI	10.1109/INTMAG.2005.1464043
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2005-04-04
Publisher Place	Japan
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Spin valves Magnetic heads Magnetic tunneling Magnetic noise Micromagnetics Equations Permanent magnets Torque Current distribution Resistors
Content Type	Text
Resource Type	Article

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

Spin transfer induced noise in CPP read heads

Microtrack baseline instability of spin valve heads

On Linear Performance Scaling Of MR/SAL And Spin Valve Heads

Micromagnetic simulation of 20 GB/In/sup 2/ spin valve read heads

Highly sensitive CPP elements using spin-valve film with nano-oxide layers for over 100 Gbit/inch/sup 2/ read heads

Highly sensitive CPP elements using spin-valve film with nano-oxide layers for over 100 Gbit/inch/sup 2/ read heads

Spin-Torque Noise in CPP-GMR Heads with Current Screen Layer

Taper effect in spin valve devices

Optimization of permanent magnet stabilization for balanced sensitivities and variations of spin valve heads

Current induced noise in CPP and CCP/CPP spin valve read heads

Similar Documents

Spin transfer induced noise in CPP read heads

Microtrack baseline instability of spin valve heads

On Linear Performance Scaling Of MR/SAL And Spin Valve Heads

Micromagnetic simulation of 20 GB/In/sup 2/ spin valve read heads

Highly sensitive CPP elements using spin-valve film with nano-oxide layers for over 100 Gbit/inch/sup 2/ read heads

Highly sensitive CPP elements using spin-valve film with nano-oxide layers for over 100 Gbit/inch/sup 2/ read heads

Spin-Torque Noise in CPP-GMR Heads with Current Screen Layer

Taper effect in spin valve devices

Optimization of permanent magnet stabilization for balanced sensitivities and variations of spin valve heads

Current induced noise in CPP and CCP/CPP spin valve read heads