EBSD analysis of MgB2 bulk superconductors

Anjela Dimitrova Koblischka-Veneva, Michael Rudolf Koblischka, J. Schmauch, Kazuo Inoue, Muralidhar Miryala, K. Berger, J. Noudem

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

The grain orientation, the texture and the grain boundary misorientations are important parameters for the understanding of the magnetic properties of the bulk MgB2 samples intended for super-magnet applications. Such data can be provided by electron backscatter diffraction (EBSD) analysis. However, as the grain size (GS) of the MgB2 bulks is preferably in the 100-200 nm range, the common EBSD technique working in reflection operates properly only on highly dense samples. In order to achieve a reasonably good Kikuchi pattern quality on all samples, we apply here the newly developed transmission EBSD (t-EBSD) technique to several bulk MgB2 samples. This method requires the preparation of TEM slices by means of focused ion-beam milling, which are then analyzed within the SEM, operating with a specific sample holder. We present several EBSD mappings of samples prepared with different techniques and at various reaction temperatures.

Original languageEnglish
Article number044007
JournalSuperconductor Science and Technology
Volume29
Issue number4
DOIs
Publication statusPublished - 2016 Mar 11

Fingerprint

Electron diffraction
Superconducting materials
diffraction
electrons
Focused ion beams
Crystal orientation
Magnets
Magnetic properties
Grain boundaries
Textures
holders
Transmission electron microscopy
misalignment
Scanning electron microscopy
magnets
textures
grain boundaries
grain size
ion beams
magnetic properties

Keywords

  • critical currents
  • EBSD
  • MgB
  • microstructure

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Condensed Matter Physics
  • Ceramics and Composites
  • Materials Chemistry
  • Metals and Alloys

Cite this

EBSD analysis of MgB2 bulk superconductors. / Koblischka-Veneva, Anjela Dimitrova; Koblischka, Michael Rudolf; Schmauch, J.; Inoue, Kazuo; Miryala, Muralidhar; Berger, K.; Noudem, J.

In: Superconductor Science and Technology, Vol. 29, No. 4, 044007, 11.03.2016.

Research output: Contribution to journalArticle

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