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Disorder-induced Ro...
Disorder-induced Room Temperature Ferromagnetism in Glassy Chromites
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- Araujo, Carlos Moyses (author)
- Uppsala universitet,Materialteori,Condensed Matter Theory Group
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- Nagar, Sandeep (author)
- KTH,Materialvetenskap
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- Ramzan, Muhammad, 1971- (author)
- Uppsala universitet,Materialteori,Condensed Matter Theory Group
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Shukla, R. (author)
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Jayakumar, O. D. (author)
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Tyagi, A. K. (author)
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Liu, Yi-Sheng (author)
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Chen, Jeng-Lung (author)
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Glans, Per-Anders (author)
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Chang, Chinglin (author)
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- Blomqvist, Andreas (author)
- Uppsala universitet,Materialteori
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Lizarraga, Raquel (author)
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Holmström, Erik (author)
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- Belova, Lyubov (author)
- KTH,Teknisk materialfysik
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Guo, Jinghua (author)
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- Ahuja, Rajeev (author)
- Uppsala universitet,KTH,Tillämpad materialfysik,Materialteori,Applied Materials Physics, Department of Materials and Engineering, Royal Institute of Technology (KTH), SE-100 44 Stockholm, Sweden,Condensed Matter Theory Group
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- Rao, K. Venkat (author)
- KTH,Materialvetenskap
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(creator_code:org_t)
- 2014-04-15
- 2014
- English.
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In: Scientific Reports. - : Springer Science and Business Media LLC. - 2045-2322. ; 4, s. 4686-
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Abstract
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- We report an unusual robust ferromagnetic order above room temperature upon amorphization of perovskite [YCrO3] in pulsed laser deposited thin films. This is contrary to the usual expected formation of a spin glass magnetic state in the resulting disordered structure. To understand the underlying physics of this phenomenon, we combine advanced spectroscopic techniques and first-principles calculations. We find that the observed order-disorder transformation is accompanied by an insulator-metal transition arising from a wide distribution of Cr-O-Cr bond angles and the consequent metallization through free carriers. Similar results also found in YbCrO3-films suggest that the observed phenomenon is more general and should, in principle, apply to a wider range of oxide systems. The ability to tailor ferromagnetic order above room temperature in oxide materials opens up many possibilities for novel technological applications of this counter intuitive effect.
Subject headings
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
Publication and Content Type
- ref (subject category)
- art (subject category)
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- By the author/editor
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Araujo, Carlos M ...
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Nagar, Sandeep
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Ramzan, Muhammad ...
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Shukla, R.
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Jayakumar, O. D.
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Tyagi, A. K.
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show more...
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Liu, Yi-Sheng
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Chen, Jeng-Lung
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Glans, Per-Ander ...
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Chang, Chinglin
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Blomqvist, Andre ...
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Lizarraga, Raque ...
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Holmström, Erik
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Belova, Lyubov
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Guo, Jinghua
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Ahuja, Rajeev
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Rao, K. Venkat
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show less...
- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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and Condensed Matter ...
- Articles in the publication
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Scientific Repor ...
- By the university
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Royal Institute of Technology
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Uppsala University