Publication

On electronic properties of Al-Mn(-Si) quasicrystals

Davor Pavuna
1988
Journal Articles

Abstract

The authors present structural and resistivity studies of the melt-spun Al-Mn (10-20 at.% Mn) alloys which contain more than 50 vol.% of the quasicrystalline (QC) phase. Using a two-phase Landauer model, they estimate the electrical resistivity of the QC phase to be of the order 150-200 μΩ cm. The same magnitude of resistivity was measured in Al75Mn20Si5 which is almost entirely `mono' quasicrystal. The authors discuss the electronic structure and argue that electrical resistivity and high (meta)stability of quasicrystals can be understood within a framework of the Friedel model of virtual bound states

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https://infoscience.epfl.ch/entities/publication/691a50b2-ce76-4d82-bae3-2c7817d84644

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Davor Pavuna
1988
Journal Articles

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/691a50b2-ce76-4d82-bae3-2c7817d84644

About this result

Related concepts (27)

Electrical resistivity and conductivity

Electrical resistivity (also called volume resistivity or specific electrical resistance) is a fundamental specific property of a material that measures its electrical resistance or how strongly it resists electric current. A low resistivity indicates a material that readily allows electric current. Resistivity is commonly represented by the Greek letter ρ (rho). The SI unit of electrical resistivity is the ohm-metre (Ω⋅m).

Phase transition

In chemistry, thermodynamics, and other related fields, a phase transition (or phase change) is the physical process of transition between one state of a medium and another. Commonly the term is used to refer to changes among the basic states of matter: solid, liquid, and gas, and in rare cases, plasma. A phase of a thermodynamic system and the states of matter have uniform physical properties. During a phase transition of a given medium, certain properties of the medium change as a result of the change of external conditions, such as temperature or pressure.

Phase (matter)

In the physical sciences, a phase is a region of material that is chemically uniform, physically distinct, and (often) mechanically separable. In a system consisting of ice and water in a glass jar, the ice cubes are one phase, the water is a second phase, and the humid air is a third phase over the ice and water. The glass of the jar is another separate phase. (See .) More precisely, a phase is a region of space (a thermodynamic system), throughout which all physical properties of a material are essentially uniform.

Related publications (14)

On electronic properties of Al-Mn(-Si) quasicrystals

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