TERMIUM Plus®

The Government of Canada’s terminology and linguistic data bank.

MAGNETIC ANISOTROPY [8 records]

Record 1 2011-06-07

English

Subject field(s)
  • Chemistry
CONT

The orientation of molecules in solutions can be achieved by two approaches; using already oriented medium(liquid crystals, solution of aligned nanorods or nanodiscs) as a solvent where dissolved molecules of interest align by the physical interaction(steric, electrostatic, etc.) with the elements of media; or by directly aligning molecules, if they have large anisotropy of one of their own physical properties(magnetic, electric, steric, etc.).

French

Domaine(s)
  • Chimie
CONT

Détection des signaux RMN [résonance magnétique nucléaire] en milieu hétérogène. Il s’agit des milieux orientés (cristaux liquides, certains tissus biologiques) et des solides […]

Spanish

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Record 2 2011-06-07

English

Subject field(s)
  • Electromagnetic Radiation
CONT

… an independent determination of molecular magnetic susceptibility anisotropy can be used to reduce the number of parameters that must be taken from residual dipolar measurements in the determination of structure or motion … For magnetic field alignment of diamagnetic systems, susceptibility tensors can be calculated from the summation of individual group anisotropies when a structural model for the molecule is available.

French

Domaine(s)
  • Rayonnements électromagnétiques

Spanish

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Record 3 2011-02-08

English

Subject field(s)
  • Ferrous Alloys
  • Magnetic Materials and Ferromagnetism
OBS

Users of permanent magnets know of the very high magnetic coercivity exhibited by certain rare earth-iron alloys, most commonly neodymium-iron-boron... but also including such other rare earth elements as dysprosium for higher anisotropy... Very similar alloys have been developed which excel in related magnetic properties. Take for example, the alloy with terbium and dysprosium commonly known as Terfenol-D... which exhibits a very high magnetostriction; this alloy is said to have "Giant" Magnetostriction.

OBS

... a miniature actuator ... utilizes a Terfenol-D rod; only the end of the rod is visible, attached to a metal dome for actuation. The length of the rod changes as current is applied to the coil surrounding it. The housing acts as part of the magnetic circuit, which also includes a conventional permanent magnet for biasing (not visible). Thus, actuation is provided only by the changing length of the rod, although some mechanical amplification (e.g.: using a lever arm) may be advantageous.

OBS

Magnetostrictive material, such as these Terfenol-D rods that are several centimeters long, changes its length in a magnetic field. Originally developed for military sonar, the alloy is finding use in actuators, vibration controllers and sensors.

French

Domaine(s)
  • Alliages ferreux
  • Matériaux magnétiques et ferromagnétisme
OBS

Le Terfenol-D, alliage de métaux de faible résistance électrique, développe des courants de Foucault lorsque la fréquence de vibration augmente, d'où des pertes. [...] Autre inconvénient du Terfenol-D : son coût élevé, obstacle qui pourrait être surmonté grâce à des alliages à base de terres rares moins chères.

Spanish

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Record 4 2010-12-07

English

Subject field(s)
  • Electromagnetic Radiation
DEF

The orientation of magnetic domains vertical to the magnetic membrane surface.

French

Domaine(s)
  • Rayonnements électromagnétiques

Spanish

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Record 5 2010-09-27

English

Subject field(s)
  • Analytical Chemistry
  • Mineralogy
CONT

... the dependence of the chemical shift on the geometric relationship between that local environment and the direction of the static magnetic field... This... factor is referred to as the chemical shift anisotropy(CSA). The net result of the CSA is that, for a static amorphous or powdered crystalline sample, the entire range of the chemical shifts spanned by all possible orientations is present in the spectrum. The result is known as a CSA powder pattern...

French

Domaine(s)
  • Chimie analytique
  • Minéralogie
OBS

anisotrope : Se dit des substances dont les propriétés physiques [...] varient en fonction de la direction. (On dit aussi anisotropique).

Spanish

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Record 6 2003-03-26

English

Subject field(s)
  • Measurements of Magnetism
  • Space Physics
CONT

X-ray spectropolarimetry is a powerful new tool for investigating the anisotropy of dense z-pinch plasmas. It is sensitive to the magnetic field and energetic electron distribution function, plasma characteristics important to z-pinch behavior, that, in general, have not been measured adequately.

Key term(s)
  • X ray spectropolarimetry

French

Domaine(s)
  • Mesures de grandeurs magnétiques
  • Physique spatiale

Spanish

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Record 7 1989-12-19

English

Subject field(s)
  • Magnetism
DEF

The dependence of the magnetic properties of some materials on direction.

French

Domaine(s)
  • Magnétisme
CONT

Les bulles sont des domaines cylindriques aimantés perpendiculairement au plan de la couche magnétique qui les contient, en sens inverse du reste de cette couche. La couche doit posséder une anisotropie magnétique perpendiculaire qui fixe la direction de l'aimantation.

Spanish

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Record 8 1980-08-21

English

Subject field(s)
  • Magnetism
OBS

Memory storage elements are magnetic films deposited on silicon-glass substrate. During deposition, a strong magnetic field produces a uniaxial magnetic anisotropy in the films of the storage element.

French

Domaine(s)
  • Magnétisme
OBS

[Le] dépôt [de nickel-fer magnétisable] en continu se fait en présence d'un champ magnétique circulaire qui va créer une anisotropie magnétique axiale, autrement dit une direction de magnétisation privilégiée (...)

Spanish

Save record 8

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