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Exploration of the CU-MN-AS ternary phase diagram and MN3B4 antiferromagnets
Yu, Jingwen
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https://hdl.handle.net/2142/101740
Description
- Title
- Exploration of the CU-MN-AS ternary phase diagram and MN3B4 antiferromagnets
- Author(s)
- Yu, Jingwen
- Issue Date
- 2018-05-03
- Director of Research (if dissertation) or Advisor (if thesis)
- Shoemaker, Daniel P.
- Department of Study
- Materials Science & Engineerng
- Discipline
- Materials Science & Engr
- Degree Granting Institution
- University of Illinois at Urbana-Champaign
- Degree Name
- M.S.
- Degree Level
- Thesis
- Date of Ingest
- 2018-09-27T16:45:27Z
- Keyword(s)
- Antiferromagnets, Phase Diagram.
- Abstract
- CuMnAs was first studied more than fifty years ago, both in a tetragonal phase (t-CuMnAs) and orthorhombic phase (o-CuMnAs). Today, the prospect of spintronics has created a new focus on antiferromagnetic materials with Néel temperatures above room temperature, with the goal of reading and writing spin orientations by electrical current. Tetragonal CuMnAs is a candidate whose experimental reading and writing with electrical field has been realized as a proof of concept. Our fundamental knowledge of other phases in the Cu-Mn-As ternary system remains to be improved. In this study, we study a broader part of the phase diagram of this system. We examine the structure of different phases, their thermal and magnetic properties, and the relationship between stoichiometry and structure. We also present our synthetic and magnetic characterization of antiferromagnetic Mn3B4. Single crystals larger than 200 microns were obtained and examined by single-crystal diffraction and magnetometry.
- Graduation Semester
- 2018-08
- Type of Resource
- text
- Permalink
- http://hdl.handle.net/2142/101740
- Copyright and License Information
- Copyright 2018 Jingwen Yu
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Graduate Dissertations and Theses at Illinois PRIMARY
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