Hyperfine interactions in nanostructured iron oxide composites

Kerstin Witte

doi:10.18453/rosdok_id00001583

Kerstin Witte

Hyperfine interactions in nanostructured iron oxide composites

Universität Rostock, 2015

https://doi.org/10.18453/rosdok_id00001583

Abstract: The field assisted sintering offers the unique possibility to consolidate materials while maintaining nanostructures. This method can be used to tailor grain sizes in sintered permanent bulk magnets. Since the physical properties of the bulk material changes, these changes have to be originated by variations of the electronic structure. In the case of iron rich magnetic materials, Moessbauer spectroscopy is an ideal tool to detect such variations. It is demonstrated that for nanostructured iron oxide bulk materials, the hyperfine interactions change due to the small size of grains below 80 nm.

Dissertation Freier Zugang

Titel:

Hyperfine interactions in nanostructured iron oxide composites

Beteiligte Personen:

Kerstin Witte[VerfasserIn]
	1075019672
Eberhard Burkel , Prof. Dr.[AkademischeR BetreuerIn]
	132965593
	Universität Rostock, Mathematisch-Naturwissenschaftliche Fakultät, Institut für Physik, Physik Neuer Materialien
Mohsen Abd-Elmeguid , Prof. Dr.[AkademischeR BetreuerIn]
	Universität zu Köln, Mathematisch-Naturwissenschaftliche Fakultät, Fachgruppe Physik, Hochdruckphysik

Beteiligte Körperschaften:

Universität Rostock, Mathematisch-Naturwissenschaftliche Fakultät[Grad-verleihende Institution]
	2147083-2

Zusammenfassung:

The field assisted sintering offers the unique possibility to consolidate materials while maintaining nanostructures. This method can be used to tailor grain sizes in sintered permanent bulk magnets. Since the physical properties of the bulk material changes, these changes have to be originated by variations of the electronic structure. In the case of iron rich magnetic materials, Moessbauer spectroscopy is an ideal tool to detect such variations. It is demonstrated that for nanostructured iron oxide bulk materials, the hyperfine interactions change due to the small size of grains below 80 nm. [Englisch]

Dokumenttyp:

Dissertation

Einrichtung:

Mathematisch-Naturwissenschaftliche Fakultät

Sprache:

Englisch

Sachgruppe der DNB:

530 Physik

Veröffentlichung /
Entstehung:

Rostock

Rostock: Universität Rostock

2015