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Title: Local structure of the Mg x Ni x Co x Cu x Zn x O( x =0.2) entropy-stabilized oxide: An EXAFS study

Authors:
ORCiD logo [1];  [1];  [1];  [1]
  1. Department of Materials Science and Engineering, North Carolina State University, Raleigh North Carolina
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States). Advanced Photon Source (APS)
Sponsoring Org.:
NSFU.S. ARMY RESEARCHU.S. OFFICE OF NAVAL RESEARCH
OSTI Identifier:
1368220
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of the American Ceramic Society; Journal Volume: 100; Journal Issue: 6
Country of Publication:
United States
Language:
ENGLISH

Citation Formats

Rost, Christina M., Rak, Zsolt, Brenner, Donald W., and Maria, Jon-Paul. Local structure of the Mg x Ni x Co x Cu x Zn x O( x =0.2) entropy-stabilized oxide: An EXAFS study. United States: N. p., 2017. Web. doi:10.1111/jace.14756.
Rost, Christina M., Rak, Zsolt, Brenner, Donald W., & Maria, Jon-Paul. Local structure of the Mg x Ni x Co x Cu x Zn x O( x =0.2) entropy-stabilized oxide: An EXAFS study. United States. doi:10.1111/jace.14756.
Rost, Christina M., Rak, Zsolt, Brenner, Donald W., and Maria, Jon-Paul. Mon . "Local structure of the Mg x Ni x Co x Cu x Zn x O( x =0.2) entropy-stabilized oxide: An EXAFS study". United States. doi:10.1111/jace.14756.
@article{osti_1368220,
title = {Local structure of the Mg x Ni x Co x Cu x Zn x O( x =0.2) entropy-stabilized oxide: An EXAFS study},
author = {Rost, Christina M. and Rak, Zsolt and Brenner, Donald W. and Maria, Jon-Paul},
abstractNote = {},
doi = {10.1111/jace.14756},
journal = {Journal of the American Ceramic Society},
number = 6,
volume = 100,
place = {United States},
year = {Mon Apr 10 00:00:00 EDT 2017},
month = {Mon Apr 10 00:00:00 EDT 2017}
}
  • Transition-metal-doped Bi{sub 2}Sr{sub 1.8}La{sub 0.2}Cu{sub 1{minus}{ital x}}{ital M}{sub {ital x}}O{sub {ital y}} ({ital M}=Fe, Co, Ni, and Zn) samples were synthesized. X-ray diffraction analysis showed that these 3{ital d} elements had different solubility in Bi{sub 2}Sr{sub 1.8}La{sub 0.2}CuO{sub {ital y}}. The limits of solid solution formation were at {ital x}=0.5 for the Fe system, {ital x}=1.0 for the Co system, and {ital x}=0.1 for the Ni and Zn systems. The effect of these 3{ital d} metal substitutions for Cu on the incommensurate modulation structure in Bi{sub 2}Sr{sub 1.8}La{sub 0.2}CuO{sub {ital y}} was examined by means of electron diffraction. The experimentalmore » results showed that all the substitutions of Fe, Co, Ni, and Zn for Cu decreased the modulation periodicity. It decreased from 4.32{ital b} at {ital x}=0 to 3.95{ital b} at {ital x}=0.5 for the Fe system, 3.82{ital b} at {ital x}=1.0 for the Co system, 4.24{ital b} at {ital x}=0.1 for the Ni system, and 4.18{ital b} at {ital x}=0.1 for the Zn system, respectively. In addition, the structure distortion characteristic related to the change in the incommensurate modulation was examined with Raman scattering. The experimental data showed that the vibration properties of the oxygen atoms in both Bi-O and Sr-O bondings also changed with the decrease in the modulation periodicity. This behavior can be considered a consequence of structural relaxation caused by the enhancement of the degree of crystal misfit. {copyright} {ital 1996 The American Physical Society.}« less
  • The Magneto-electric composites (x) Mg{sub 0.2}Cu{sub 0.3}Zn{sub 0.5}Fe{sub 2}O{sub 4} + (1-x) Ba{sub 0.8}Zr{sub 0.2}TiO{sub 3} (x=15%,30%,45%) were synthesized by sintering mixtures of highly ferroelectric Ba{sub 0.8}Zr{sub 0.2}TiO{sub 3} (BZT) and highly magneto-strictive component Mg{sub 0.2}Cu{sub 0.3}Zn{sub 0.5}Fe{sub 2}O{sub 4} (MCZF). The presences of two phases in magneto-electric composites were probed by X-ray diffraction (XRD) studies. The peaks observed in the XRD spectrum indicated spinel cubic structure for MCZF ferrite and tetragonal perovskite structure for BZT and, both spinel and pervoskite structures for synthesized composites. Surface morphology of the samples has been investigated using Field Emission Scanning Electron Microscope (FESEM).more » Frequency dependent dielectric properties of synthesized composites were measured from 100 Hz to 1 MHz at RT using HIOKI LCR HI-TESTER. The dielectric dispersion is observed at lower frequencies for the synthesized ME composites. The magnetic properties of synthesized composites were analyzed using a Vibrating Sample Magnetometer (VSM). It is observed that the values of saturation magnetization increases along with the ferrite content.« less
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