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Room Temperature Fe...
Room Temperature Ferromagnetism and Lack of Ferroelectricity in Thin Films of 'Biferroic?' YbCrO3
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- Nagar, Sandeep (författare)
- KTH,Teknisk materialfysik
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- Rao, K. Venkat (författare)
- KTH,Teknisk materialfysik
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- Belova, Lyubov (författare)
- KTH,Teknisk materialfysik
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Catalan, G. (författare)
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Hong, J. (författare)
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Scott, J. F. (författare)
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Tyagi, A. K. (författare)
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Jayakumar, O. D. (författare)
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Shukla, R. (författare)
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Liu, Yi-Sheng (författare)
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Guo, Jinghua (författare)
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(creator_code:org_t)
- Materials Research Society, 2009
- 2009
- Engelska.
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Ingår i: Novel Materials and Devices for Spintronics. - : Materials Research Society. - 9781605111568 ; , s. 163-168
- Relaterad länk:
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https://urn.kb.se/re...
Abstract
Ämnesord
Stäng
- Search for novel multi-functional materials, especially multiferroics, which are ferromagnetic above room temperature and at the same time exhibit a ferroelectric behavior much above room temperature, is an active topic of extensive studies today Ability to address an entity with an external field, laser beam, and also electric potential is a welcome challenge to develop multifunctional devices enabled by nanoscience While most of the studies to date have been on various forms of Bi and Ba based Ferrites, rare earth chromites are a new class of materials which appear to show some promise However m the powder and bulk form these materials are at best canted antiferromagnets with the magnetic transition temperatures much below room temperature In this presentation we show that thin films of YbCrO3 deposited by Pulsed Laser Deposition exhibit robust ferromagnetic properties above room temperature It is indeed a welcome surprise and a challenge to understand the evolution of above room temperature ferromagnetism in such a thin film The thin films are amorphous in contrast to the powder and bulk forms which are crystalline The magnetic properties are those of a soft magnet with low coercivity We present extensive investigations of the magnetic and ferroelectric properties, and spectroscopic studies using XAS techniques to understand the electronic states of the constituent atoms in this novel Chromite While the amorphous films are ferromagnetic much above room temperature, we show that any observation of ferroelectric property in these films is an artifact of a leaky highly resistive material
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Materialteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering (hsv//eng)
Nyckelord
- rare-earth orthochromites
- chromites
- Materials science
- Teknisk materialvetenskap
Publikations- och innehållstyp
- ref (ämneskategori)
- kon (ämneskategori)
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Till lärosätets databas
- Av författaren/redakt...
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Nagar, Sandeep
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Rao, K. Venkat
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Belova, Lyubov
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Catalan, G.
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Hong, J.
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Scott, J. F.
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visa fler...
-
Tyagi, A. K.
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Jayakumar, O. D.
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Shukla, R.
-
Liu, Yi-Sheng
-
Guo, Jinghua
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visa färre...
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