Next Article in Journal
Effect of Dimensions and Agglomerations of Carbon Nanotubes on Synchronous Enhancement of Mechanical and Damping Properties of Epoxy Nanocomposites
Next Article in Special Issue
Growth Mechanism of Seed-Layer Free ZnSnO3 Nanowires: Effect of Physical Parameters
Previous Article in Journal
DNA-Assisted Assembly of Gold Nanostructures and Their Induced Optical Properties
Open AccessArticle

Ionic Transportation and Dielectric Properties of YF3:Eu3+ Nanocrystals

1
Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, National Demonstration Center for Experimental Physics Education, Jilin Normal University, Siping 136000, China
2
State Key Laboratory of Superhard Materials, Jilin University, Changchun 130012, China
*
Author to whom correspondence should be addressed.
Nanomaterials 2018, 8(12), 995; https://doi.org/10.3390/nano8120995
Received: 16 November 2018 / Revised: 25 November 2018 / Accepted: 29 November 2018 / Published: 1 December 2018
(This article belongs to the Special Issue The Synthesis, Assembly, Property and Application of Nanocrystals)
  |  
PDF [4365 KB, uploaded 1 December 2018]
  |  

Abstract

The ionic transportation and dielectric properties of YF3:Eu3+ nanocrystals are investigated by AC impedance spectroscopy. The ion diffusion coefficient and conductivity increase along with the doping concentration and reach their highest values at 4% of Eu3+. The difference of ionic radius between Eu3+ and Y3+ leads to the structural disorder and lattice strain, which deduces the increase of the ion diffusion coefficient and conductivity before 4% Eu3+ doping; then the interaction of the neighboring doping ions is dominated, which results in the difficulty of ion migration and decreases of the ion diffusion coefficient and conductivity. The strong dispersion of the permittivity in the low frequency region indicates that the charge carrier transport mechanism is the ion hopping in the system. The low-frequency hopping dispersion is affected by an interfacial polarization, which exhibits a Maxwell-Wagner relaxation process, and its loss peak shifts to higher frequency with the ionic conductivity increasing. View Full-Text
Keywords: nanocrystals; ionic transportation; dielectric behavior; permittivity nanocrystals; ionic transportation; dielectric behavior; permittivity
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
SciFeed

Share & Cite This Article

MDPI and ACS Style

Cui, X.; Hu, T.; Wang, J.; Zhang, J.; Zhong, X.; Chen, Y.; Li, X.; Yang, J.; Gao, C. Ionic Transportation and Dielectric Properties of YF3:Eu3+ Nanocrystals. Nanomaterials 2018, 8, 995.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Nanomaterials EISSN 2079-4991 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top