CuCr₁₋ₓMgₓO₂, a wide band gap semiconductor with the delafossite structure, has been synthesized
in bulk and thin-film form. Bulk undoped CuCrO₂ is almost black and has moderate conductivity
with p-type carriers. Upon doping with 5% Mg, the conductivity increases by a factor of 1000. In
films, the best p-type conductivity...
Complete solid solutions with the composition Na₃M₂₋ₓM’ₓSbO₆ where M, M’ = Cu, Mg, Ni, Zn have been synthesized by conventional solid state techniques and were investigated using X-ray diffraction, magnetism and optical measurements. All compositions crystallize in a monoclinic unit cell and exhibit a layered structure with a honeycomb cationic...
Hexagonal AMO₂ and AMO₃ phases have the same basic structure, and intermediate compositions for this structure have been prepared by topotactic oxidation of AMO₂ phases such as RCuO₂, where R is a trivalent rare earth cation. We now find that such intermediate phases can also be prepared by topotactic reduction...
The solid solutions of InGa₁₋ₓFeₓCuO₄, InFeCu₁₋ₓMgₓO₄, and InGa₁₋ₓFeₓCu₁₋ₓMgₓO₄ were
synthesized and characterized through the use of X – ray and neutron diffraction, and DC –
magnetism measurements. All compositions of InGa₁₋ₓFeₓCuO₄ are single phase and crystallize
in the R3m space group, but a transformation to the spinel InFeMgO₄ structure was...
Transport and structural properties of Mg-doped and O-intercalated sintered powders and
polycrystalline films of CuSc₁₋ₓMgₓO[subscript 2+y] are reported. Substitution of Mg for Sc systematically
increases the p-type conductivity in CuSc₁₋ₓMgₓO₂ sintered powders, producing a maximum
conductivity of 0.015 S/cm at x≈0.06. A similar level of conductivity is observed in transparent...
Transparent films of CuScO₂₊ₓ have been prepared which show p-type electrical conductivity. The temperature dependence of the conductivity indicates semiconducting behavior with an apparent room temperature activation energy of 0.11 eV. The highest room temperature conductivity observed was 30 S cm⁻1. Films 110 nm thick show 40% transparency in most...
BaBiO₃ has the perovskite structure, but tilting of the BiO₆ octahedra destroy the ideal cubic symmetry except at temperatures above 820 K. BaBiO₃ is a diamagnetic semiconductor due to a charge density wave (CDW), which is equivalent to a Ba₂Bi³⁺Bi⁵⁺O₆ representation. Recent calculations and experimental results confirm that there is...
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737 6749.
E-mail address: arthur.sleight@oregonstate.edu
Arthur W. Sleight ⇑
Department of Chemistry
BaBiO₃ has the perovskite structure, but tilting of the BiO₆ octahedra destroy the ideal cubic symmetry except at temperatures above 820 K. BaBiO₃ is a diamagnetic semiconductor due to a charge density wave (CDW), which is equivalent to a Ba₂Bi³⁺Bi⁵⁺O₆ representation. Recent calculations and experimental results confirm that there is...
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”
Arthur
W.
Sleight
1. Coexistence
of
Ibmm
and
I4/mcm
phases
2. Tilt
BaBiO₃ has the perovskite structure, but tilting of the BiO₆ octahedra destroy the ideal cubic symmetry except at temperatures above 820 K. BaBiO₃ is a diamagnetic semiconductor due to a charge density wave (CDW), which is equivalent to a Ba₂Bi³⁺Bi⁵⁺O₆ representation. Recent calculations and experimental results confirm that there is...
The discovery of a brilliant-blue color upon the introduction of Mn³⁺
to the trigonal-bipyramidal (TBP) sites in YInO₃ has led to a search for other hosts
for Mn³⁺ in TBP coordination. An obvious choice would be YAlO₃. This compound,
which has only been prepared through a citrate precursor route, has...
