Journal ArticleDOI
Chemical order induced by ion irradiation in FePt (001) films
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TLDR
In this article, the long-range order parameter S of sputtered FePt (001) films may be improved by using postgrowth He ion irradiation, which was demonstrated both on disordered and partially ordered (S∼0.4) films in which S was increased up to 0.3 and 0.6 respectively.Abstract:
We demonstrate that the long-range order parameter S of sputtered FePt (001) films may be improved by using postgrowth He ion irradiation. This was demonstrated both on disordered (S∼0) and partially ordered (S∼0.4) films in which S was increased up to 0.3 and 0.6, respectively. X-ray diffraction analysis showed that these changes are due to irradiation-induced chemical ordering. The changes in the magnetic hysteresis loops correlate with the expected perpendicular magnetic anisotropy increase. This method may find applications in ultrahigh-density magnetic recording.read more
Citations
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Journal ArticleDOI
Heat Assisted Magnetic Recording
Mark H. Kryder,Edward Charles Gage,Terry McDaniel,William Albert Challener,Robert Earl Rottmayer,Ganping Ju,Yiao-Tee Hsia,Mehmet Fatih Erden +7 more
TL;DR: The challenges for heat-assisted magnetic recording are surveyed and the progress that has been made in addressing them are surveyed.
Journal ArticleDOI
Perpendicular magnetic anisotropy at transition metal/oxide interfaces and applications
Bernard Dieny,Mairbek Chshiev +1 more
TL;DR: In this paper, a review of magnetic magnetic anisotropy at magnetic metal/oxide interfaces is presented, along with some applications of this interfacial PMA in STT-MRAM.
Journal ArticleDOI
Tailoring magnetism by light-ion irradiation
TL;DR: In this article, a review of ion-induced modifications of magnetic anisotropies and exchange coupling is presented, which is limited to radiation-induced structural changes giving rise to a modification of magnetic parameters.
Journal ArticleDOI
Magnetic patterning by means of ion irradiation and implantation
Jürgen Fassbender,Jeffrey McCord +1 more
TL;DR: In this paper, the authors present a review of ion irradiation and implantation effects on pure magnetic patterning of micro-and nano structures, including the interlayer exchange coupling, the exchange bias effect, the magnetic damping behavior and the saturation magnetization to name a few.
Book ChapterDOI
Heat-Assisted Magnetic Recording
Robert Earl Rottmayer,Sharat Batra,Dorothea Buechel,William Albert Challener,Julius Hohlfeld,Yukiko Kubota,Lei Li,Bin Lu,Christophe Mihalcea,Keith R. Mountfield,Kalman Pelhos,Chubing Peng,Tim Rausch,Michael Allen Seigler,Dieter Weller,XiaoMin Yang +15 more
TL;DR: In this paper, a heat-assisted magnetic recording (HAMR) is proposed to extend areal densities to 1 Tb/in2 and beyond, and the unique components for a working HAMR system have been demonstrated.
References
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Journal ArticleDOI
Planar Patterned Magnetic Media Obtained by Ion Irradiation
Claude Chappert,Harry Bernas,Jacques Ferré,V. Kottler,J.P. Jamet,Yong Chen,Edmond Cambril,Thibaut Devolder,F. Rousseaux,V. Mathet,H. Launois +10 more
TL;DR: By ion irradiation through a lithographically made resist mask, the magnetic properties of cobalt-platinum simple sandwiches and multilayers were patterned without affecting their roughness and optical properties.
Journal ArticleDOI
High anisotropy L1/sub 0/ thin films for longitudinal recording
TL;DR: In this paper, the authors report the preparation, microstructural characterization, magnetic properties, and magnetic recording performance of L1/sub 0/ phase thin (25 /spl Aring/ to 200 /spl Ring/) films, which are prepared by sputter deposition and ex-situ anneal.
Journal ArticleDOI
Control of the axis of chemical ordering and magnetic anisotropy in epitaxial FePt films
R. F. C. Farrow,Dieter Weller,Ronald Franklin Marks,Michael F. Toney,Alfonso Cebollada,G. R. Harp +5 more
TL;DR: Growth of epitaxial films of the L10 phase of FePt, with the tetragonal c axis along either the film normal or in-plane, is described in this paper.
Journal ArticleDOI
Magnetic Domain Structures in Thin Uniaxial Plates with Perpendicular Easy Axis
J. A. Cape,G. W. Lehman +1 more
TL;DR: In this article, the authors present a convenient formulation of the single-domain energy in the wall energy model and minimize the total energy of a lattice of cylindrical domains and of a parallel stripe array in an infinite plate.
Journal ArticleDOI
Magnetic domains in epitaxial ordered FePd(001) thin films with perpendicular magnetic anisotropy
TL;DR: In this article, small magnetic domains (70 nm) have been observed by magnetic force microscopy in ordered FePd thin films grown by molecular-beam epitaxy, and the magnetization curves show that the easy magnetization axis is perpendicular to the film plane.