Inhomogeneous compounds having high magnetic resistance, the production and use thereof
First Claim
1. An inhomogeneous inorganic compound containing an overall phase system comprising a main phase and at least one secondary phase, of whichthe main phase is an intermetallic compound,wherein the intermetallic compoundhas at least three elements per formula unit,is semiconducting or has a metal-semiconductor transition,has a magnetoresistance with an intrinsic field sensitivity of at least 0.1% per 0.1 T,has cubic symmetry with a maximum structural distortion of 10%belongs to half-Heusler phaseshas 8 or 18 valence electrons andis paramagneticand wherein the secondary phaseis metallic and comprises at least one element which occurs in the intermetallic compound.
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Abstract
The invention relates to inorganic, intermetallic, inhomogeneous compounds having a magnetic resistance effect and an intrinsic field sensitivity of at least 7% at 1 T at room temperature. The invention further relates to a method for the production and use thereof, particularly as magnetic field sensors or in spin electronics.
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Citations
13 Claims
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1. An inhomogeneous inorganic compound containing an overall phase system comprising a main phase and at least one secondary phase, of which
the main phase is an intermetallic compound, wherein the intermetallic compound has at least three elements per formula unit, is semiconducting or has a metal-semiconductor transition, has a magnetoresistance with an intrinsic field sensitivity of at least 0.1% per 0.1 T, has cubic symmetry with a maximum structural distortion of 10% belongs to half-Heusler phases has 8 or 18 valence electrons and is paramagnetic and wherein the secondary phase is metallic and comprises at least one element which occurs in the intermetallic compound.
Specification