Publication

ON MAGNETIC INTERACTIONS IN QUASICRYSTALLINE Al//8//6Mn//1//4 AND Al//7//5Mn//2//0Si//5 ALLOYS

Davor Pavuna
1987
Journal Articles

Abstract

Low temperature specific heat and ac susceptibility studies on quasicrystalline Al//8//6Mn//1//4 and Al//7//5Mn//2//0Si//5 show that most Mn's are nonmagnetic. The fraction of magnetic Mn's (about 5-10% of all Mn atoms) exhibit spin-glass behavior which in the case of AlMnSi is comparable to that of canonical spin-glasses like Ag-Mn or Cu-Mn. Nuclear hyperfine specific heat term, spin-glass ordering temperature and magnetoresistance, all indicate an enhanced magnetic character in quasicrystalline AlMnSi as compared to AlMn//1//4.

Official source

https://infoscience.epfl.ch/entities/publication/0a165cea-0460-404d-b194-51a619e6f5d6

About this result

This page is automatically generated and may contain information that is not correct, complete, up-to-date, or relevant to your search query. The same applies to every other page on this website. Please make sure to verify the information with EPFL's official sources.

Graph Chat

Chat with Graph Search

Ask any question about EPFL courses, lectures, exercises, research, news, etc. or try the example questions below.

DISCLAIMER: The Graph Chatbot is not programmed to provide explicit or categorical answers to your questions. Rather, it transforms your questions into API requests that are distributed across the various IT services officially administered by EPFL. Its purpose is solely to collect and recommend relevant references to content that you can explore to help you answer your questions.

Davor Pavuna
1987
Journal Articles

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/0a165cea-0460-404d-b194-51a619e6f5d6

About this result

Related concepts (31)

Spin glass

In condensed matter physics, a spin glass is a magnetic state characterized by randomness, besides cooperative behavior in freezing of spins at a temperature called 'freezing temperature' Tf. In ferromagnetic solids, component atoms' magnetic spins all align in the same direction. Spin glass when contrasted with a ferromagnet is defined as "disordered" magnetic state in which spins are aligned randomly or without a regular pattern and the couplings too are random.

Order and disorder

In physics, the terms order and disorder designate the presence or absence of some symmetry or correlation in a many-particle system. In condensed matter physics, systems typically are ordered at low temperatures; upon heating, they undergo one or several phase transitions into less ordered states. Examples for such an order-disorder transition are: the melting of ice: solid-liquid transition, loss of crystalline order; the demagnetization of iron by heating above the Curie temperature: ferromagnetic-paramagnetic transition, loss of magnetic order.

Temperature

Temperature is a physical quantity that expresses quantitatively the perceptions of hotness and coldness. Temperature is measured with a thermometer. Thermometers are calibrated in various temperature scales that historically have relied on various reference points and thermometric substances for definition. The most common scales are the Celsius scale with the unit symbol °C (formerly called centigrade), the Fahrenheit scale (°F), and the Kelvin scale (K), the latter being used predominantly for scientific purposes.

Related publications (32)

ON MAGNETIC INTERACTIONS IN QUASICRYSTALLINE Al//8//6Mn//1//4 AND Al//7//5Mn//2//0Si//5 ALLOYS

Chat with Graph Search

A High-Throughput ab initio Database of Harmonic Phonon Properties for Inorganic Crystals

Spin excitations near the pressure-induced antiferromagnetic transition in SrCu2(BO3)2

Field-Induced Magnon Decay, Magnon Shadows, and Rotonlike Excitations in the Honeycomb Antiferromagnet YbBr3