IMm BULLETIN
A Publication oftheMaterialsResearch Socie
Volume31, Number5 ISSN:0883-7694CODEN: MRSBEA
May2006
MATERIALS FOR MAGNETICDATA STORAGE
374 MaterialsforMagnetic Data Storage: TheOngoing Ouest forSuperior Magnetic Materials
H.Coufal, L.Dhar,andC.D.Mee, GuestEditors
379 State-of-the-Art Magnetic HardDiskDrives
LR.McFadyen, E.E.Fullerton, and M.J.Carey
384 Media for Magnetic Recording Beyond100Gbit/in.2
H.J.Richter andS.D.Harkness IV
389 Spin-Polarized Current inSpin ValvesandMagnetic Tunnel Junctions
S.Parkin
395 MagneticDomainWalisin Nanowires
R.AllenspachandP.-O.Jubert
400 Spintronics: TheFutureof
>DataStorage?
SA Wolf,D.Treger, and A.Chtchelkanova 404 MagneticTape:The
Challengeof Reaching Hard-Disk-Drive Data DensitiesonFlexibleMedia R.H.Dee
SPECIALFEATURE
410 A Perspective on
ModelingMaterialsin Extreme Environments: Oxidation of Ultrahigh- Temperature Ceramics
A. Bongiorno,C.J.F6rst,R.K.Kalia, J. Li,J. Marschall,A. Nakano, M.M.Opeka,LG.Talrny,P.Vashishta, andS.Yip
ABSTRACTS
422 Abstractsfor June 2006 Journalof MaterialsResearch
DEPARTMENTS
365 Research/Researchers 372 SciencePolicy
399 Advertisers in ThisIssue 420 Upcoming Conferences
Multiphase andComposite Materials;
Bioengineering andNanotechnology;
PrintingofFunctional Materials
421 HistoricalNote
TheSlipperiestSolidSubstanceon Earth,T. Palucka
425 Calendar 430 Classified 432 Posterminaries
A BrownStudy,P. Goodhew
aN THE CUVER: Materials for Magnetic Data Storage. Today's hard disk and magnetictape drives take advantage 01novel nanoengineeredcomposite materials and quantum mechanical processes to achieve continuai increases in areal density.
The trend in storage density over lime is shawn schematically in the graph. Behind the graph is a transmission electron micrograph 01a Qiant magnetoresistive spin-valve read head, viewed as il looking up at the head Irom the media. The sensor is 120 nm wide. (Image courtesy 01P. Shang and W. Legg.). The schematic at lower right represents one type 01spin-engineered magnetic storage device, a double tunnel junction (Irom Parkin et al., Proc. IEEE91, 2003, p.661). Ses the technical theme thaï begins on p. 374.
Also in this issue is a special leature on modeling materials in extreme environments locusing on oxidation 01ultrahigh-temperature ceramics.
Shawn here is a scanning electron microscopy cross-sectional image 01a ZrB2+SiCcomposite alter lumace oxidation at 1300°C lor 2 h. Inset shows an O2(green) diffusion pathway in a oorosilicate glass Iramework (boron, brown; silicon, silver; lramework oxygen, red) calculated by density lunctional theory.
Ses the special leature thaï begins on p. 410.
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