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Synthesis and magne...
Synthesis and magnetic properties of Pr0.57Ca0.43MnO3 nanoparticles
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- Wang, Z. Q. (author)
- Nanjing University, Peoples R China
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- Gao, Feng (author)
- Linköpings universitet,Biomolekylär och Organisk Elektronik,Tekniska högskolan
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- Wang, K. F. (author)
- Nanjing University, Peoples R China
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- Yu, H. (author)
- Nanjing University, Peoples R China
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- Ren, Z. F. (author)
- Nanjing University, Peoples R China
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- Liu, J. -M. (author)
- Nanjing University, Peoples R China
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(creator_code:org_t)
- Elsevier, 2007
- 2007
- English.
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In: Materials Science & Engineering. - : Elsevier. - 0921-5107 .- 1873-4944. ; 136:1, s. 96-100
- Related links:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Subject headings
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- Pr0.57Ca0.43MnO3 nanoparticles with an average particle size of similar to 20 nm have been synthesized using hydrothermal method in combination with post-annealing, and characterized using X-ray diffraction, X-ray photoelectron spectrometer, high-resolution transmission electron microscopy and superconducting quantum interference device magnetometery. The results show that the hydrothermal synthesis of Pr1-xCaxMnO3 compound below 240 degrees C is difficult. The Pr0.57Ca0.43MnO3 nanoparticles obtained by annealing the hydrothermal products at 900 degrees C for 2 h present an orthorhombic perovskite structure with the same lattice as bulk Pr0.6Sr0.4MnO3. Magnetic characterization reveals that the low-temperature antiferromagnetic and charge ordering transitions identified in bulk Pr0.57Ca0.43MnO3 are completely suppressed in the nanoparticles, while a ferromagnetic transition occurs at -110 K. The spin-freezing behavior at low temperature for the Pr0.57Ca0.43MnO3 nanoparticles is demonstrated. (c) 2006 Elsevier B.V. All rights reserved.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Materialteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering (hsv//eng)
Keyword
- perovskite manganese oxides; nanomaterials; magnetic properties; charge ordering
Publication and Content Type
- ref (subject category)
- art (subject category)
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