scholarly journals Ion Beam Stabilization of FePt Nanoparticle Arrays for Magnetic Storage Media

2003 ◽  
Author(s):  
Michael F Toney
Keyword(s):  
Ion Beam ◽  
Magnetic Storage ◽  
Nanoparticle Arrays ◽  
Fept Nanoparticle ◽  
Storage Media ◽  
Magnetic Storage Media

scholarly journals Ion Beam Stabilization of FePt Nanoparticle Arrays for Magnetic Storage Media

2003 ◽  
Vol 777 ◽  
Author(s):  
J.E.E. Baglin ◽  
Shouheng Sun ◽  
A.J. Kellock ◽  
T. Thomson ◽  
M.F. Toney ◽  
...  
Keyword(s):  
Ion Beam ◽  
Matrix Material ◽  
Organic Matrix ◽  
Fept Nanoparticles ◽  
Magnetic Storage ◽  
Storage Media ◽  
Stencil Mask ◽  
High Density Recording ◽  
Nanoparticle Coatings ◽  
Magnetic Storage Media

AbstractWe describe the use of ion beam induced crosslinking to harden the organic matrix material of self-assembled arrays of monodisperse (4 nm) FePt nanoparticles, providing diamondlike carbon barriers to inhibit agglomeration of the nanoparticles under heat treatment. Such stabilization is necessary for the particles to survive the >500°C annealing required for growth of the fct L10 phase of FePt, whose magnetic anisotropy is necessary for application of such arrays for high density recording. Selective area irradiation of continuous nanoparticle coatings, using ion beams patterned over a full disk by stencil mask or with ion projection optics, followed by dissolution of the unexposed coating, is proposed as a means of fabricating extended bit patterns consisting of isolated “islands” of FePt nanoparticles, with characteristic dimensions of tens of nanometers.

scholarly journals New advances on Au–magnetic organic hybrid core–shells in MRI, CT imaging, and drug delivery

RSC Advances ◽  
2021 ◽  
Vol 11 (12) ◽  
pp. 6517-6525
Author(s):  
Fatemeh Mohajer ◽  
Ghodsi Mohammadi Ziarani ◽  
Alireza Badiei
Keyword(s):  
Magnetic Resonance Imaging ◽  
Drug Delivery ◽  
Magnetic Nanoparticles ◽  
Targeted Drug Delivery ◽  
Magnetic Storage ◽  
Resonance Imaging ◽  
Organic Hybrid ◽  
Storage Media ◽  
Targeted Drug ◽  
Magnetic Storage Media

Magnetic nanoparticles have been studied for scientific and technological applications such as magnetic storage media, contrast agents for magnetic resonance imaging, biolabelling, separation of biomolecules, and magnetic-targeted drug delivery.

Mössbauer analysis of magnetic storage media

1987 ◽  
Vol 23 (5) ◽  
pp. 2815-2817 ◽  
Author(s):  
W. Vetterling ◽  
F. Habbal ◽  
M. Wober
Keyword(s):  
Magnetic Storage ◽  
Storage Media ◽  
Magnetic Storage Media ◽  
Mössbauer Analysis

Second-harmonic magnetoresistive imaging to authenticate and recover data from magnetic storage media

2001 ◽  
Author(s):  
David P. Pappas ◽  
C. Stephen Arnold ◽  
Gideon Shalev ◽  
Carla Eunice ◽  
D. Stevenson ◽  
...  
Keyword(s):  
Second Harmonic ◽  
Magnetic Storage ◽  
Storage Media ◽  
Magnetic Storage Media

scholarly journals Epitaxial growth of (001) and (111) Ni films on MgO substrates

2000 ◽  
Vol 648 ◽  
Author(s):  
Rosa Alejandra Lukaszew ◽  
Vladimir Stoica ◽  
Ctirad Uher ◽  
Roy Clarke
Keyword(s):  
Epitaxial Growth ◽  
Supported Catalysts ◽  
High Energy ◽  
Scanning Tunneling ◽  
Magnetic Storage ◽  
Tunneling Microscopy ◽  
Ceramic Substrates ◽  
Storage Media ◽  
Annealing Conditions ◽  
Magnetic Storage Media

AbstractMetal-ceramic interfaces are important in applications as diverse as magnetic storage media and supported catalysts. It is very important to understand how the crystallography and microstructure of metallic films deposited onto ceramic substrates depend on growth and/or annealing conditions so that their physical properties (e.g. magnetic, electronic, etc.) can be tailored for specific applications. To this end, we have studied the epitaxial growth and annealing of (001) and (111) Ni films MBE grown on MgO substrates, where we have observed the evolution of the surface using correlated in- situ RHEED (reflection high-energy-electron diffraction) and STM (scanning tunneling microscopy) measurements.

ELECTROCHEMICAL TECHNIQUES TO AID IN THE DEVELOPMENT OF IMPROVED CARBON OVERCOATS ON MAGNETIC STORAGE MEDIA

2002 ◽  
Vol 16 (06n07) ◽  
pp. 968-972
Author(s):  
D. J. BLACKWOOD ◽  
CHEE JOO GOH ◽  
B. TOMCIK
Keyword(s):  
Electrochemical Techniques ◽  
Electrochemical Technique ◽  
Magnetic Storage ◽  
Carbon Overcoat ◽  
Corrosion Properties ◽  
Protective Properties ◽  
Storage Media ◽  
Surface Analysis Techniques ◽  
Carbon Overcoats ◽  
Magnetic Storage Media

With the trend of decreasing the thickness of the carbon overcoat on high-density magnetic recordings, the corrosion properties of a hard disk multilayer structure are becoming a hot issue. An ideal overcoat would be uniform across the disk's surface, have low porosity and electrical conductivity as well as being impermeable to water. However, in reality this is not viable and corrosion is inevitable. One possible method of improving the corrosion resistance of carbon overcoats is to introduce carbide bilayers. In this paper the corrosion protective properties of CrC/C and BC/C nanolaminated overcoat structures have been analyzed by an electrochemical technique based on LPR measurements. The results allowed an overcoat's resistance to be correlated to its porosity and a statistical method was developed to allow easy comparison of results. The results from the electrochemical measurements were correlated with a range of surface analysis techniques.

scholarly journals Correlation of Texture With Magnetic Properties of Thin Film Storage Media

1989 ◽  
Vol 11 (2-4) ◽  
pp. 231-248 ◽  
Author(s):  
E. Hädicke ◽  
A. Werner ◽  
H. Hibst
Keyword(s):  
Hysteresis Loops ◽  
Magnetic Data ◽  
Magnetic Storage ◽  
Micro Structure ◽  
Glass Substrates ◽  
Storage Media ◽  
Deposition Parameters ◽  
Pole Figures ◽  
Magnetic Layers ◽  
Magnetic Storage Media

Thin coherent metal films of Co–Cr alloys on Si or glass substrates were used for high density magnetic storage media. They were made by sputtering or evaporation. Variation of the deposition parameters will change the micro structure especially the texture of the thin magnetic layers. We could relate the crystallographic data (rocking curves and pole figures) with the magnetic data (hysteresis loops). Correlations between deposition parameters and crystallographic and magnetic investigations will be discussed in detail.

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