magnetic anisotropy
Orientation-dependent magnetic properties
Magnetic anisotropy is the tendency of a material to magnetize more easily along certain directions than others.
The property depends on crystal structure, shape, or internal stresses—iron magnetizes readily along specific crystal axes, while a thin film magnetizes preferentially in its plane.
The hard drive's magnetic anisotropy keeps data stable.
Engineers exploit anisotropy in designing permanent magnets and recording media.
Fastening with pointed fasteners
- nucleationInitial cluster formation
- reversalComplete change of direction
- switchingChanging from one to another
- maze patternIntricate path arrangement
Width-height relationship of images
- thin filmNarrow surface coating
- nanowireNanoscale conductive filament
- ellipsoidOval solid shape
- needlePointed implement for sewing
platelet · oblate · prolate · elongated · form factor · geometry · nanoparticle · self-assembly
Magnetic spinning storage device
- data storageRetaining digital information
- permanent magnetSelf-sustaining magnetic material
Along two perpendicular lines
- K2Earth's second-highest peak
- latticeOpenwork of crossed strips
- textureSurface tactile quality
- polycrystallineHaving many crystal grains
Minimum needed to react
- activation energyMinimum energy for transformation
- energy densityStored power per unit
- total energySystem's full energy content
pinning
Fastening with pointed fasteners
- nucleationInitial cluster formation
- reversalComplete change of direction
- switchingChanging from one to another
aspect ratio
Width-height relationship of images
needle · platelet · oblate · prolate · elongated · form factor · geometry · nanoparticle · self-assembly
hard disk drive
Magnetic spinning storage device
- data storageRetaining digital information
- permanent magnetSelf-sustaining magnetic material
biaxial
Along two perpendicular lines
energy barrier
Minimum needed to react
- activation energyMinimum energy for transformation
- energy densityStored power per unit
- total energySystem's full energy content
magnetite
Magnetic iron ore
- hematiteIron oxide ore
- paleomagnetismRemnant magnetism in rocks
linewidth
Thickness of drawn strokes
- magnetismmagnet, ferromagnetism, electromagnet, permanent magnets, magnetization
- paleomagnetismpaleomagnetism, reversed polarity, remanence, excursion, excursions
- liquid crystalsliquid crystal, nematic, LCD, order parameter, phase transition
- spintronics
- Superconductorssuperconductivity, zero resistance, Cooper, mixed state, superconducting magnet