Sökning: "longitudinal spin fluctuations"

Hittade 3 uppsatser innehållade orden longitudinal spin fluctuations.

1. 1. Modelling Magnetism of hcp Iron under Earth’s Inner Core Conditions : Based on first-principle DFT calculations and Machine Learning

   Master-uppsats, Linköpings universitet/Teoretisk Fysik

   Författare :Linda Le; [2022]
   Nyckelord :Machine learning; Earth’s Inner Core; hcp Iron; Electronic structure magnetism; Density functional Theory; Local magnetic moments; Ab initio molecular dynamics; ASD-AIMD-MLLSF simulation;

   Sammanfattning : The structure of Earth’s core remains largely a mystery. The solid inner core is believed to exist in extreme pressure and temperature conditions comparable to 300 GPa and 6000 K and consists mainly of iron, Fe. LÄS MER

3. 2. Accelerating longitudinal spinfluctuation theory for iron at high temperature using a machine learning method

   Master-uppsats, Linköpings universitet/Teoretisk Fysik

   Författare :Marian Arale Brännvall; [2020]
   Nyckelord :Machine learning; longitudinal spin fluctuations; kernel ridge regression;

   Sammanfattning : In the development of materials, the understanding of their properties is crucial. For magnetic materials, magnetism is an apparent property that needs to be accounted for. There are multiple factors explaining the phenomenon of magnetism, one being the effect of vibrations of the atoms on longitudinal spin fluctuations. LÄS MER

4. 3. A theoretical study of longitudinal and transverse spin fluctuations in disordered Fe64Ni36 alloys

   Master-uppsats, Linköpings universitet/Teoretisk Fysik

   Författare :Amanda Ehn; [2020]
   Nyckelord :INVAR effect; longitudinal spin fluctuations; transversal spin fluctuations;

   Sammanfattning : That certain iron and nickel alloys exhibit an anomalously low thermal expansion of a wide temperature range has been observed since late 1800s, and this effect is known as the Invar effect. Since then, many theories have been proposed to explain the phenomenon. LÄS MER