NDLI: The cylindrical symmetry of the angular distribution of particles in magnetic tapes

Content Provider	IEEE Xplore Digital Library
Author	Bate, G. Williams, J.
Copyright Year	1965
Abstract	To understand the writing process in magnetic recording, it is necessary to take account of the perpendicular component of magnetization in the coating as well as the in-plane component. To do this, we need to determine the shape of the magnetization curve in the perpendicular direction. We have measured this magnetization curve for eighteen samples of tape whose thicknesses ranged from 2.5 μm to 10 μm and orientation ratios from 1.0 to 3.0 and corrected each curve for the effects of demagnetization, Comparing each of these curves with the curve measured in the transverse direction, we found that the ratio of transverse remanence to perpendicular remanence (corrected for demagnetization) was 1.092, standard deviation 0.166. Two disk-shaped samples were further measured as a function of the angle ψ where (90-ψ) is the angle between the field direction and the polar axis of the sample. Our conclusion is that for these tape coatings the angular distribution of particles was cylindrically symmetric about the direction of coating within about 10%. Consequently, it is possible to determine the magnetization curves of the coatings in the perpendicular direction from measurements made in the transverse direction.
Sponsorship	IEEE Magnetics Society
Starting Page	869
Ending Page	870
Page Count	2
File Size	295862
File Format	PDF
ISSN	00189464
Volume Number	14
Issue Number	5
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1978-09-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Magnetization Coatings Magnetic field measurement Thickness measurement Demagnetization Remanence Perpendicular magnetic recording Writing Magnetic recording Shape
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

Magnetization in recorded tape

Angular dependence of the remanence coercivity in magnetic recording media

Remanence and Coercivity Measurements of Perpendicular ECC Media

The angular distribution of the magnetization in magnetic recording tapes

Recording performances of Ba-ferrite coated perpendicular magnetic tapes

Experimental characterization methods for perpendicular recording materials

Interaction effects in longitudinally oriented and non-oriented barium hexaferrite tapes

Remanence properties of substituted Ba-ferrite particles for high density magnetic recording

Magnetic characterization of perpendicular recording media

The cylindrical symmetry of the angular distribution of particles in magnetic tapes

Similar Documents

Magnetization in recorded tape

Angular dependence of the remanence coercivity in magnetic recording media

Remanence and Coercivity Measurements of Perpendicular ECC Media

The angular distribution of the magnetization in magnetic recording tapes

Recording performances of Ba-ferrite coated perpendicular magnetic tapes

Experimental characterization methods for perpendicular recording materials

Interaction effects in longitudinally oriented and non-oriented barium hexaferrite tapes

Remanence properties of substituted Ba-ferrite particles for high density magnetic recording

Magnetic characterization of perpendicular recording media

The cylindrical symmetry of the angular distribution of particles in magnetic tapes