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Ab initio Theory of Magnetic Ordering

Electronic Origin of Pair- and Multi-Spin Interactions

  • Eduardo Mendive Tapia
Book

Part of the Springer Theses book series (Springer Theses)

Table of contents

  1. Front Matter
    Pages i-xviii
  2. Eduardo Mendive Tapia
    Pages 1-5
  3. Eduardo Mendive Tapia
    Pages 7-28
  4. Eduardo Mendive Tapia
    Pages 123-128
  5. Back Matter
    Pages 129-131

About this book

Introduction

Many technological applications exploit a variety of magnetic structures, or magnetic phases, to produce and optimise solid-state functionality. However, most research advances are restricted to a reduced number of phases owing to computational and resource constraints. This thesis presents an ab-initio theory to efficiently describe complex magnetic phases and their temperature-dependent properties.

The central assumption is that magnetic phases evolve slowly compared with the underlying electronic structure from which they emerge. By describing how the electronic structure adapts to the type and extent of magnetic order, a theory able to describe multi-spin correlations and their effect on the magnetism at finite temperature is obtained.

It is shown that multi-spin correlations are behind the temperature and magnetic field dependence of the diverse magnetism in the heavy rare earth elements. Magnetically frustrated Mn-based materials and the effect of strain are also investigated. These studies demonstrate that the performance of solid-state refrigeration can be enhanced by multi-spin effects.


Keywords

Disordered Local Moment Theory of Magnetism Ab-initio Theory of Magnetism at Finite Temperature Magnetism and Magnetic Materials Modelling Caloric Effects or Magnetic Refrigeration Multi-Spin Interactions or High Order Magnetic Interactions Magnetic Phase Diagrams Magnetic Phase Transitions Heavy Rare Earth Elements Magnetic Frustration Spin-Lattice Coupling

Authors and affiliations

  • Eduardo Mendive Tapia
    • 1
  1. 1.Department of Computational Materials DesignMax Planck Institute for Iron ResearchDüsseldorfGermany

Bibliographic information

  • DOI https://doi.org/10.1007/978-3-030-37238-5
  • Copyright Information Springer Nature Switzerland AG 2020
  • Publisher Name Springer, Cham
  • eBook Packages Physics and Astronomy
  • Print ISBN 978-3-030-37237-8
  • Online ISBN 978-3-030-37238-5
  • Series Print ISSN 2190-5053
  • Series Online ISSN 2190-5061
  • Buy this book on publisher's site