Alff, Lambert
Riedel, Ralf ; Chen, I-Wei (eds.) (2013):
Magnetic Ceramics.
Volume 4: Applications , In: Ceramics Science and Technology, pp. 495-510, Weinheim, Germany, Wiley-VCH Verlag GmbH & Co. KGaA, ISBN 978352731158,
[Book Section]
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.
| Item Type: | Book Section |
|---|---|
| Erschienen: | 2013 |
| Editors: | Riedel, Ralf ; Chen, I-Wei |
| Creators: | Alff, Lambert |
| Title: | Magnetic Ceramics |
| Language: | English |
| 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. |
| Book Title: | Ceramics Science and Technology |
| Series Volume: | Volume 4: Applications |
| Place of Publication: | Weinheim, Germany |
| Publisher: | Wiley-VCH Verlag GmbH & Co. KGaA |
| ISBN: | 978352731158 |
| Uncontrolled Keywords: | doped manganites, ferrimagnetic double-perovskites, magnetic ceramics, magnetite (Fe3O4), rare-earth-free magnetic materials, spintronic applications |
| Divisions: | 11 Department of Materials and Earth Sciences > Material Science > Advanced Thin Film Technology 11 Department of Materials and Earth Sciences > Material Science 11 Department of Materials and Earth Sciences |
| Date Deposited: | 09 Jan 2014 09:04 |
| URL / URN: | http://dx.doi.org/10.1002/9783527631971.ch14 |
| Identification Number: | doi:10.1002/9783527631971.ch14 |
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