Oxygen vacancy and Ce{sup 3+} ion dependent magnetism of monocrystal CeO{sub 2} nanopoles synthesized by a facile hydrothermal method

Wang, Leini; Meng, Fanming

doi:10.1016/J.MATERRESBULL.2013.05.036

Title: Oxygen vacancy and Ce{sup 3+} ion dependent magnetism of monocrystal CeO{sub 2} nanopoles synthesized by a facile hydrothermal method

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Abstract

Graphical abstract: - Highlights: • Monocrystal CeO{sub 2} nanopoles are synthesized by hydrothermal method. • Suitable reaction time is beneficial for the growth CeO{sub 2} nanopoles. • As-synthesized CeO{sub 2} nanopoles show excellent RTFM. • The RTFM can be attributed to the influences of oxygen vacancies and Ce{sup 3+} ions. - Abstract: Monocrystal CeO{sub 2} nanopoles of 15–25 nm in diameter and 300–900 nm or more in length were synthesized within 100 h using hydrothermal method with CeCl{sub 3}·7H{sub 2}O as cerium source, NaOH as mineralizer, and ethylenediamine as complexant. The results of XRD and SADE analysis indicate that the as-synthesized CeO{sub 2} samples have the fluorite structure. The band gaps of CeO{sub 2} samples are 0.08–0.38 eV smaller than that of bulk CeO{sub 2}. X-ray photoelectron spectroscopy shows that the concentration of Ce{sup 3+} is higher than 20% for CeO{sub 2} samples. All the as-synthesized CeO{sub 2} samples exhibit the room temperature ferromagnetism (RTFM), and the saturation magnetization (M{sub s}) gradually increases with the increase of E{sub g} up to 2.92 eV and then decreases with E{sub g} increasing more. The highest M{sub s} of 0.167 emu/g is obtained from the CeO{sub 2} nanopoles synthesized within 100 h. Themore »« less

Authors:

Wang, Leini ^[1]; Meng, Fanming ^[1]

School of Physics and Materials Science, Anhui University, Hefei 230039 (China)

Publication Date:: Sun Sep 01 00:00:00 EDT 2013

OSTI Identifier:: 22341791

Resource Type:: Journal Article

Journal Name:: Materials Research Bulletin

Additional Journal Information:: Journal Volume: 48; Journal Issue: 9; Other Information: Copyright (c) 2013 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0025-5408

Country of Publication:: United States

Language:: English

Subject:: 36 MATERIALS SCIENCE; 77 NANOSCIENCE AND NANOTECHNOLOGY; CERIUM IONS; CERIUM OXIDES; FERROMAGNETISM; FLUORITE; HYDROTHERMAL SYNTHESIS; MAGNETIC PROPERTIES; MAGNETIZATION; MONOCRYSTALS; NANOSTRUCTURES; OXYGEN; X-RAY DIFFRACTION; X-RAY PHOTOELECTRON SPECTROSCOPY

Citation Formats


                    Wang, Leini, Anhui Key Laboratory of Information Materials and Devices, Anhui University, Hefei 230039, Meng, Fanming, Anhui Key Laboratory of Information Materials and Devices, Anhui University, Hefei 230039, and Key Laboratory of Materials Modification by Laser, Ion and Electron Beams. Oxygen vacancy and Ce{sup 3+} ion dependent magnetism of monocrystal CeO{sub 2} nanopoles synthesized by a facile hydrothermal method.  United States: N. p., 2013. 
        Web.  doi:10.1016/J.MATERRESBULL.2013.05.036.

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                    Wang, Leini, Anhui Key Laboratory of Information Materials and Devices, Anhui University, Hefei 230039, Meng, Fanming, Anhui Key Laboratory of Information Materials and Devices, Anhui University, Hefei 230039, & Key Laboratory of Materials Modification by Laser, Ion and Electron Beams. Oxygen vacancy and Ce{sup 3+} ion dependent magnetism of monocrystal CeO{sub 2} nanopoles synthesized by a facile hydrothermal method.  United States.  https://doi.org/10.1016/J.MATERRESBULL.2013.05.036

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                    Wang, Leini, Anhui Key Laboratory of Information Materials and Devices, Anhui University, Hefei 230039, Meng, Fanming, Anhui Key Laboratory of Information Materials and Devices, Anhui University, Hefei 230039, and Key Laboratory of Materials Modification by Laser, Ion and Electron Beams. 2013.  
        "Oxygen vacancy and Ce{sup 3+} ion dependent magnetism of monocrystal CeO{sub 2} nanopoles synthesized by a facile hydrothermal method".  United States.  https://doi.org/10.1016/J.MATERRESBULL.2013.05.036.

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@article{osti_22341791,

  title        = {Oxygen vacancy and Ce{sup 3+} ion dependent magnetism of monocrystal CeO{sub 2} nanopoles synthesized by a facile hydrothermal method},

  author       = {Wang, Leini and Anhui Key Laboratory of Information Materials and Devices, Anhui University, Hefei 230039 and Meng, Fanming and Anhui Key Laboratory of Information Materials and Devices, Anhui University, Hefei 230039 and Key Laboratory of Materials Modification by Laser, Ion and Electron Beams},

  abstractNote = {Graphical abstract: - Highlights: • Monocrystal CeO{sub 2} nanopoles are synthesized by hydrothermal method. • Suitable reaction time is beneficial for the growth CeO{sub 2} nanopoles. • As-synthesized CeO{sub 2} nanopoles show excellent RTFM. • The RTFM can be attributed to the influences of oxygen vacancies and Ce{sup 3+} ions. - Abstract: Monocrystal CeO{sub 2} nanopoles of 15–25 nm in diameter and 300–900 nm or more in length were synthesized within 100 h using hydrothermal method with CeCl{sub 3}·7H{sub 2}O as cerium source, NaOH as mineralizer, and ethylenediamine as complexant. The results of XRD and SADE analysis indicate that the as-synthesized CeO{sub 2} samples have the fluorite structure. The band gaps of CeO{sub 2} samples are 0.08–0.38 eV smaller than that of bulk CeO{sub 2}. X-ray photoelectron spectroscopy shows that the concentration of Ce{sup 3+} is higher than 20% for CeO{sub 2} samples. All the as-synthesized CeO{sub 2} samples exhibit the room temperature ferromagnetism (RTFM), and the saturation magnetization (M{sub s}) gradually increases with the increase of E{sub g} up to 2.92 eV and then decreases with E{sub g} increasing more. The highest M{sub s} of 0.167 emu/g is obtained from the CeO{sub 2} nanopoles synthesized within 100 h. The RTFM mechanism of CeO{sub 2} nanopoles has been proposed which can be mainly attributed to the influence of oxygen vacancies and Ce{sup 3+} ions.},

  doi          = {10.1016/J.MATERRESBULL.2013.05.036},

  url          = {https://www.osti.gov/biblio/22341791},
  journal      = {Materials Research Bulletin},

  issn         = {0025-5408},

  number       = 9,

  volume       = 48,

  place        = {United States},

  year         = {Sun Sep 01 00:00:00 EDT 2013},

  month        = {Sun Sep 01 00:00:00 EDT 2013}

}

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