Structure and defect chemistry of non-stoichiometric nickel molybdates

Doron Levin; Jackie Y. Ying

doi:10.1023/A:1009910815113

Structure and defect chemistry of non-stoichiometric nickel molybdates

Doron Levin, Jackie Y. Ying

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

15 Scopus citations

Abstract

A series of materials represented by the formula Ni_1+δMo_1-δ/3O₄, where - 1/5≤δ≤1/3, were prepared by calcination of layered ammonium nickel molybdates having a general formula (NH₄)H_2xNi_3-xO(OH)(MoO₄)₂, where 0≤x≤3/2. Phase determination using high temperature X-ray diffraction studies showed that the variable stoichiometry of the precursor phase that allowed for Ni/Mo ratios between 0.75 and 1.5 led to the formation of a single phase of the form Ni_1+δMo_1-δ/3O₄ following calcination. AC impedance spectroscopy was used to investigate the electronic conductivity of the materials. The defect chemistry of these ternary ionic materials was modeled to correlate the electronic conductivity with the structure.

Original language	English
Pages (from-to)	25-36
Number of pages	12
Journal	Journal of Electroceramics
Volume	3
Issue number	1
DOIs	https://doi.org/10.1023/A:1009910815113
State	Published - 1999
Externally published	Yes

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Ceramics and Composites
Condensed Matter Physics
Mechanics of Materials
Materials Chemistry
Electrical and Electronic Engineering

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title = "Structure and defect chemistry of non-stoichiometric nickel molybdates",

abstract = "A series of materials represented by the formula Ni1+δMo1-δ/3O4, where - 1/5≤δ≤1/3, were prepared by calcination of layered ammonium nickel molybdates having a general formula (NH4)H2xNi3-xO(OH)(MoO4)2, where 0≤x≤3/2. Phase determination using high temperature X-ray diffraction studies showed that the variable stoichiometry of the precursor phase that allowed for Ni/Mo ratios between 0.75 and 1.5 led to the formation of a single phase of the form Ni1+δMo1-δ/3O4 following calcination. AC impedance spectroscopy was used to investigate the electronic conductivity of the materials. The defect chemistry of these ternary ionic materials was modeled to correlate the electronic conductivity with the structure.",

author = "Doron Levin and Ying, \{Jackie Y.\}",

year = "1999",

doi = "10.1023/A:1009910815113",

language = "English",

volume = "3",

pages = "25--36",

journal = "Journal of Electroceramics",

issn = "1385-3449",

publisher = "Springer Netherlands",

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TY - JOUR

T1 - Structure and defect chemistry of non-stoichiometric nickel molybdates

AU - Levin, Doron

AU - Ying, Jackie Y.

PY - 1999

Y1 - 1999

N2 - A series of materials represented by the formula Ni1+δMo1-δ/3O4, where - 1/5≤δ≤1/3, were prepared by calcination of layered ammonium nickel molybdates having a general formula (NH4)H2xNi3-xO(OH)(MoO4)2, where 0≤x≤3/2. Phase determination using high temperature X-ray diffraction studies showed that the variable stoichiometry of the precursor phase that allowed for Ni/Mo ratios between 0.75 and 1.5 led to the formation of a single phase of the form Ni1+δMo1-δ/3O4 following calcination. AC impedance spectroscopy was used to investigate the electronic conductivity of the materials. The defect chemistry of these ternary ionic materials was modeled to correlate the electronic conductivity with the structure.

AB - A series of materials represented by the formula Ni1+δMo1-δ/3O4, where - 1/5≤δ≤1/3, were prepared by calcination of layered ammonium nickel molybdates having a general formula (NH4)H2xNi3-xO(OH)(MoO4)2, where 0≤x≤3/2. Phase determination using high temperature X-ray diffraction studies showed that the variable stoichiometry of the precursor phase that allowed for Ni/Mo ratios between 0.75 and 1.5 led to the formation of a single phase of the form Ni1+δMo1-δ/3O4 following calcination. AC impedance spectroscopy was used to investigate the electronic conductivity of the materials. The defect chemistry of these ternary ionic materials was modeled to correlate the electronic conductivity with the structure.

UR - https://www.scopus.com/pages/publications/0032642102

U2 - 10.1023/A:1009910815113

DO - 10.1023/A:1009910815113

M3 - Article

AN - SCOPUS:0032642102

SN - 1385-3449

VL - 3

SP - 25

EP - 36

JO - Journal of Electroceramics

JF - Journal of Electroceramics

IS - 1

ER -

Structure and defect chemistry of non-stoichiometric nickel molybdates

Abstract

ASJC Scopus subject areas

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