Alff, Lambert
Hrsg.: Riedel, Ralf ; Chen, I-Wei (2013)
Magnetic Ceramics.
In: Ceramics Science and Technology
doi: 10.1002/9783527631971.ch14
Buchkapitel, Bibliographie
Kurzbeschreibung (Abstract)
This chapter focuses on a peculiar property of some magnetic oxides, namely their half-metallicity. Magnetic half-metals are materials which are metallic but in which the charge carriers — that is, the electrons close to the Fermi-level — are fully spin-polarized. It discusses three types of magnetic oxide ceramics, which are indeed half-metals: (i) the well-known magnetite (Fe3O4); (ii) doped manganites, which are famous for their colossal magneto-resistance; and (iii) ferrimagnetic double-perovskites, which allow an enormous degree of materials variation and, thereby, the tuning of their magnetic properties. The chapter briefly talks about the ferrites and nonoxide magnetic ceramics — namely the iron nitrides — as a potential magnetic family of interest in the search for novel, rare-earth-free magnetic materials. It focuses on the future where half-metallic magnetic oxides will play key roles in spintronic applications as magnetic field sensors and memory devices.
| Typ des Eintrags: | Buchkapitel |
|---|---|
| Erschienen: | 2013 |
| Herausgeber: | Riedel, Ralf ; Chen, I-Wei |
| Autor(en): | Alff, Lambert |
| Art des Eintrags: | Bibliographie |
| Titel: | Magnetic Ceramics |
| Sprache: | Englisch |
| Publikationsjahr: | 10 Juli 2013 |
| Ort: | Weinheim, Germany |
| Verlag: | Wiley-VCH Verlag GmbH & Co. KGaA |
| Buchtitel: | Ceramics Science and Technology |
| Band einer Reihe: | Volume 4: Applications |
| DOI: | 10.1002/9783527631971.ch14 |
| Kurzbeschreibung (Abstract): | This chapter focuses on a peculiar property of some magnetic oxides, namely their half-metallicity. Magnetic half-metals are materials which are metallic but in which the charge carriers — that is, the electrons close to the Fermi-level — are fully spin-polarized. It discusses three types of magnetic oxide ceramics, which are indeed half-metals: (i) the well-known magnetite (Fe3O4); (ii) doped manganites, which are famous for their colossal magneto-resistance; and (iii) ferrimagnetic double-perovskites, which allow an enormous degree of materials variation and, thereby, the tuning of their magnetic properties. The chapter briefly talks about the ferrites and nonoxide magnetic ceramics — namely the iron nitrides — as a potential magnetic family of interest in the search for novel, rare-earth-free magnetic materials. It focuses on the future where half-metallic magnetic oxides will play key roles in spintronic applications as magnetic field sensors and memory devices. |
| Freie Schlagworte: | doped manganites, ferrimagnetic double-perovskites, magnetic ceramics, magnetite (Fe3O4), rare-earth-free magnetic materials, spintronic applications |
| Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Dünne Schichten 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft 11 Fachbereich Material- und Geowissenschaften |
| Hinterlegungsdatum: | 09 Jan 2014 09:04 |
| Letzte Änderung: | 09 Jan 2014 09:04 |
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