Synthesis and magnetic properties of Pr0.57Ca0.43MnO3 nanoparticles

Z. Q. Wang; F. Gao; K. F. Wang; H. Yu; Z. F. Ren; J. M. Liu

doi:10.1016/j.mseb.2006.09.008

Synthesis and magnetic properties of Pr_0.57Ca_0.43MnO₃ nanoparticles

Z. Q. Wang^*, F. Gao, K. F. Wang, H. Yu, Z. F. Ren, J. M. Liu

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

17 Citations (Scopus)

Abstract

Pr_0.57Ca_0.43MnO₃ nanoparticles with an average particle size of ∼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 Pr_1-xCa_xMnO₃ compound below 240 °C is difficult. The Pr_0.57Ca_0.43MnO₃ nanoparticles obtained by annealing the hydrothermal products at 900 °C for 2 h present an orthorhombic perovskite structure with the same lattice as bulk Pr_0.6Sr_0.4MnO₃. Magnetic characterization reveals that the low-temperature antiferromagnetic and charge ordering transitions identified in bulk Pr_0.57Ca_0.43MnO₃ are completely suppressed in the nanoparticles, while a ferromagnetic transition occurs at ∼110 K. The spin-freezing behavior at low temperature for the Pr_0.57Ca_0.43MnO₃ nanoparticles is demonstrated.

Original language	English
Pages (from-to)	96-100
Number of pages	5
Journal	Materials Science and Engineering: B
Volume	136
Issue number	1
DOIs	https://doi.org/10.1016/j.mseb.2006.09.008
Publication status	Published - 15 Jan 2007
Externally published	Yes

Keywords

Charge ordering
Magnetic properties
Nanomaterials
Perovskite manganese oxides

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10.1016/j.mseb.2006.09.008

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title = "Synthesis and magnetic properties of Pr0.57Ca0.43MnO3 nanoparticles",

abstract = "Pr0.57Ca0.43MnO3 nanoparticles with an average particle size of ∼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 °C is difficult. The Pr0.57Ca0.43MnO3 nanoparticles obtained by annealing the hydrothermal products at 900 °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.",

keywords = "Charge ordering, Magnetic properties, Nanomaterials, Perovskite manganese oxides",

author = "Wang, {Z. Q.} and F. Gao and Wang, {K. F.} and H. Yu and Ren, {Z. F.} and Liu, {J. M.}",

year = "2007",

month = jan,

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doi = "10.1016/j.mseb.2006.09.008",

language = "English",

volume = "136",

pages = "96--100",

journal = "Materials Science and Engineering: B",

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T1 - Synthesis and magnetic properties of Pr0.57Ca0.43MnO3 nanoparticles

AU - Wang, Z. Q.

AU - Gao, F.

AU - Wang, K. F.

AU - Yu, H.

AU - Ren, Z. F.

AU - Liu, J. M.

PY - 2007/1/15

Y1 - 2007/1/15

N2 - Pr0.57Ca0.43MnO3 nanoparticles with an average particle size of ∼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 °C is difficult. The Pr0.57Ca0.43MnO3 nanoparticles obtained by annealing the hydrothermal products at 900 °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.

AB - Pr0.57Ca0.43MnO3 nanoparticles with an average particle size of ∼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 °C is difficult. The Pr0.57Ca0.43MnO3 nanoparticles obtained by annealing the hydrothermal products at 900 °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.

KW - Charge ordering

KW - Magnetic properties

KW - Nanomaterials

KW - Perovskite manganese oxides

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JO - Materials Science and Engineering: B

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ER -

Synthesis and magnetic properties of Pr_0.57Ca_0.43MnO₃ nanoparticles

Abstract

Keywords

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