Recording media research for future hard disk drives

SN Piramanayagam, K Srinivasan - Journal of Magnetism and Magnetic …, 2009 - Elsevier
Perpendicular magnetic recording (PMR) technology has recently been introduced in hard
disk drives (HDDs) by almost all the HDD manufacturers. It is expected that because of PMR …

Anisotropy dependence of irreversible switching in Fe∕ SmCo and FeNi∕ FePt exchange spring magnet films

JE Davies, O Hellwig, EE Fullerton, JS Jiang… - Applied Physics …, 2005 - pubs.aip.org
Magnetization reversal in exchange-spring magnet films has been investigated by a first-
order reversal curve (FORC) technique and vector magnetometry. In Fe∕ epitaxial-SmCo …

Separating dipolar broadening from the intrinsic switching field distribution in perpendicular patterned media

O Hellwig, A Berger, T Thomson, E Dobisz… - Applied Physics …, 2007 - pubs.aip.org
A critical requirement for bit patterned media applications is the control and minimization of
the switching field distribution (SFD). Here, we use the Δ H (M, Δ M) method to separate …

Extracting the intrinsic switching field distribution in perpendicular media: A comparative analysis

M Winklhofer, GT Zimanyi - Journal of Applied Physics, 2006 - pubs.aip.org
We introduce a method based on the first-order-reversal-curve (FORC) diagram to extract
the intrinsic (microscopic) switching-field distribution (SFD) of perpendicular recording …

Self consistent measurement and removal of the dipolar interaction field in magnetic particle assemblies and the determination of their intrinsic switching field …

JM Martínez Huerta, J De La Torre Medina… - Journal of Applied …, 2012 - pubs.aip.org
Using low density arrays of bistable magnetic nanowires as a model dipolar system, it is
shown that the dipolar interaction field coefficient can be measured from the remanence …

Magnetic interactions: a tool to modify the magnetic properties of materials based on nanoparticles

D Peddis, PE Jönsson, S Laureti, G Varvaro - Frontiers of nanoscience, 2014 - Elsevier
The magnetic behaviour of ensembles of magnetic entities depends on their intrinsic
magnetic properties and many other factors, including short-and long-range magnetic …

/spl Delta/H (M,/spl Delta/M) method for the determination of intrinsic switching field distributions in perpendicular media

A Berger, Y Xu, B Lengsfield, Y Ikeda… - IEEE transactions on …, 2005 - ieeexplore.ieee.org
We describe a method for the experimental characterization of intrinsic switching field
distributions in perpendicular media. The method is based upon a comparison between the …

Atomic resolution structure–property relation in highly anisotropic granular FePt-C films with near-Stoner-Wohlfarth behaviour

S Wicht, V Neu, L Schultz, D Weller… - Journal of Applied …, 2013 - pubs.aip.org
Chemically ordered and highly textured L 1 0 FePt-C granular films are potential media for
future heat-assisted magnetic recording. Vibrating sample magnetometry of such films in …

Configuration dependent demagnetizing field in assemblies of interacting magnetic particles

JM Martinez-Huerta, JDLT Medina… - Journal of Physics …, 2013 - iopscience.iop.org
A mean field model is presented for the configuration dependent effective demagnetizing
and anisotropy fields in assemblies of exchange decoupled magnetic particles of arbitrary …

Room temperature microwave-assisted recording on 500-Gbpsi-class perpendicular medium

Y Nozaki, N Ishida, Y Soeno, K Sekiguchi - Journal of Applied Physics, 2012 - pubs.aip.org
Microwave-assisted recording on a 500-Gbpsi-class perpendicular medium was
experimentally demonstrated at room temperature. Magnetization reversal under a radio …