Effect of a solid solution of AlN on the crystal structure and optical properties of LiSi2N3:Eu phosphors

Syntheses along the Tl5(As,Sb)13S22 compositional line in the Tl2S-As2S3-Sb2S3 phase system showed that the compositional range of rebulite extends from Tl5As9.5Sb3.5S22 to Tl5As7.75Sb5.25S22. The Sb-rich end-member is in equilibrium with jankovićite of ideal composition Tl5Sb7.5As5.5S22. It is considered to be the As-rich end-member of the jankovićite solid solution. The crystal structure analyses of crystals from the As and Sb end-members of rebulite show that the Sb/As substitution is present in Sb3, Sb4, Sb5, As1 and As2 structural sites. Of them, Sb3 is always Sb dominated whereas other four vary from As- to Sb-dominated over the range of the solid solution. The change of the structural topology from jankovićite to rebulite, the closely related but not identical structures, is explained through necessity to accommodate the smaller volumes of the As coordination polyhedra and is accomplished through unit-cell twinning over the periodic (001)reb twin boundaries. The As end-member of the rebulite solid solution is in equilibrium with the phase of Tl2.4Sb0.68As7.18S13 ideal composition, interpreted as imhofite.

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Effects of antiferroelectric substitution on the structure and ferroelectric properties of a complex perovskite solid solution

Journal of Materials Chemistry C ◽

10.1039/c9tc05084a ◽

2020 ◽

Vol 8 (17) ◽

pp. 5795-5806

Author(s):

Zenghui Liu ◽

Yi Yuan ◽

Zeng Luo ◽

Hongyan Wan ◽

Pan Gao ◽

...

Keyword(s):

Crystal Structure ◽

Solid Solution ◽

Phase Transitions ◽

Solid Solutions ◽

Piezoelectric Properties ◽

Ferroelectric Properties ◽

Complex Perovskite ◽

Polar Structure ◽

Structure Phase ◽

Piezoelectric Solid

Novel ferro-/piezoelectric solid solutions between bismuth-based perovskite and antiferroelectric material are designed and synthesized and their crystal structure, phase transitions, ferro-/piezoelectric properties and local polar structure are investigated.

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Doping Strategies of Bi (Ti0.5Ni0.5)O3 for Increased Performance in BiFeO3

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.1004-1005.358 ◽

2014 ◽

Vol 1004-1005 ◽

pp. 358-361

Author(s):

Zheng Zheng Ma ◽

Jian Qing Li ◽

Zi Peng Chen ◽

Xiao Jun Hu

Keyword(s):

Crystal Structure ◽

Solid Solution ◽

Magnetic Properties ◽

Solid Solutions ◽

Perovskite Structure ◽

Room Temperature ◽

Ferroelectric Properties ◽

Hysteresis Loops ◽

Space Group ◽

Substituted 1

Investigation of crystal structure, dielectric, magnetic and local ferroelectric properties of the diamagnetically substituted (1-x)BiFeO3-xBi (Ti0.5Ni0.5)O3solid solutions samples have been carried out. The solid solutions have been found to possess a rhombohedrally distorted perovskite structure described by the space group R3c. Compared with pure BiFeO3compound, both ferroelectric and magnetic properties are much improved by solid solution with Bi (Ti0.5Ni0.5)O3with saturation hysteresis loops observed. Among all the samples, thex=0.1 samples shows the optimal ferromagnetism with Mr~0.56531emμ/g and the optimal ferroelectricity with Pr~5.767μC/cm2 at room temperature.

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Influence of cadmium salt anion on crystal structure and optical properties of supersaturated solid solution CdxPb1−xS films

10.1063/5.0019518 ◽

2020 ◽

Author(s):

Irina V. Vaganova ◽

Larisa N. Maskaeva ◽

Elena V. Mostovshchikova ◽

V. I. Voronin ◽

Vyacheslav F. Markov

Keyword(s):

Crystal Structure ◽

Solid Solution ◽

Optical Properties ◽

Supersaturated Solid Solution ◽

Salt Anion ◽

Cadmium Salt

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Crystal Structure and Optical Properties of CoCr2O4–NiCr2O4 Solid Solutions Prepared by Low-Temperature Combustion Synthesis Method

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.616-618.1877 ◽

2012 ◽

Vol 616-618 ◽

pp. 1877-1881 ◽

Cited By ~ 3

Author(s):

Ai Jun Han ◽

Ming Quan Ye ◽

Zhi Min Zhang ◽

Juan Juan Liao ◽

Nan Li

Keyword(s):

Crystal Structure ◽

Optical Properties ◽

Low Temperature ◽

Combustion Synthesis ◽

Solid Solutions ◽

Synthesis Method ◽

Visible Region ◽

Low Temperature Combustion ◽

Temperature Combustion ◽

Phase Spinel

The Co1-xNixCr2O4(x=0.1, 0.2 and 0.3) solid solutions were successfully synthesized by low-temperature combustion synthesis method. The crystal structure and optical properties of the samples were investigated. The samples displayed single phase spinel structure with 30 nm in grain size. Infrared absorption peaks at about 525 and 630 cm-1 corresponded to the vibration of octahedron group ([CrO6] / [NiO6]) and tetrahedron group ([CoO4] / [NiO4]) respectively. Due to the electronic transition of 4A2(F) → 4T1(P) of Co2+, 4A2g → 4T2g of Cr3+, 3T1g(F) → 3T1g(P) and 3A2g(F) → 3T1g(F) of Ni2+, absorption peaks at about 578, 618 and 670 nm were observed in the visible region, making the color center be green. The degree of lightness, greenness and chroma increased, whereas the degree of blueness decreased, making the color of the samples transit from pale green to brilliant green as x value increased.

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Structure and local polar domains of Dy-modified BiFeO3–PbTiO3 multiferroic solid solutions

Journal of Materials Chemistry C ◽

10.1039/c5tc02289d ◽

2015 ◽

Vol 3 (48) ◽

pp. 12450-12456 ◽

Cited By ~ 13

Author(s):

Jian Zhuang ◽

Jingyan Zhao ◽

Lun-Wei Su ◽

Hua Wu ◽

Alexei A. Bokov ◽

...

Keyword(s):

Crystal Structure ◽

Phase Transition ◽

Phase Diagram ◽

Solid Solution ◽

Solid Solutions ◽

Room Temperature ◽

Ferroelectric Phase ◽

Phase Transition Behavior ◽

Structure Phase ◽

Structure Phase Transition

Based on the detailed investigations of the crystal structure, phase transition behavior and local polar domains, a ferroelectric phase diagram is established in this study for the room-temperature multiferroic Dy-modified BiFeO3–PbTiO3 solid solution.

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Preparation and Optical Properties of Polycrystalline Aluminum Germanate

MRS Proceedings ◽

10.1557/proc-32-245 ◽

1984 ◽

Vol 32 ◽

Author(s):

S. Prochazka ◽

G. A. Slack

Keyword(s):

Crystal Structure ◽

Optical Properties ◽

Solid Solutions ◽

Infrared Absorption ◽

Optical Constants ◽

Polycrystalline Aluminum ◽

Lattice Constants ◽

Wide Range ◽

Wide Compositional Range ◽

Infrared Absorption Spectra

Aluminum germanate, the germanium analog of mullite, 3 AlO2O3 . 2 GeO2, was first prepared by Gelsdorf, Muller-Hesse and Schweite (Ref. 1), who demonstrated that both partial and complete substitution of SiO2 by GeO2 in mullite was possible. They also determined the lattice constants of the solid solutions. The following studies reported some physical properties of aluminum germanate such as density (Ref. 2) optical constants (Ref. 2) crystal structure (Ref. 3) and I. R. absorption (Ref. 4). Phase equilibria in the system AlO2O3−GeO2 were investigated by Miller et al. (Ref. 5) and Perez-y-Jorba (Ref. 6). The ratter author found several compounds of which germanium mullite was the most stable and showed a relatively wide compositional range. Miller et al. observed only 3 Al2O3 . 2 GeO2 with no evidence of solid solutions. The compound was reported to melt incongruently at 1530° C. Recently Yamaguchi et al. (Ref. 7) prepared aluminum germanates of a wide range of stoichiometry from alkyl oxides and found, in addition to germanium mullite, the compound Al2O3−2GeO2 which was stable between 1190° and 1310° C. The authors also report infrared absorption spectra.

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Crystal structure of the solid solution Ba8.35Pb0.65(B3O6)6

Acta Crystallographica Section E Crystallographic Communications ◽

10.1107/s2056989017001864 ◽

2017 ◽

Vol 73 (3) ◽

pp. 349-353 ◽

Cited By ~ 1

Author(s):

Wenwu Zhao

Keyword(s):

Crystal Structure ◽

Solid Solution ◽

High Temperature ◽

Single Crystals ◽

Solid Solutions ◽

Three Dimensional ◽

Dimensional Structure ◽

Barium Borate ◽

Three Dimensional Structure ◽

Spontaneous Nucleation

Single crystals of lead barium borate, Ba8.35Pb0.65(B3O6)6, octabarium lead(II) hexakis(triborate), have been obtained by spontaneous nucleation from a high-temperature melt. Its three-dimensional structure is constructed on the basis of a BaO9polyhedron, a (Pb/Ba)O6octahedron (occupancy ratio Pb:Ba = 0.216:0.784) and a condensed B3O6ring anion. In the crystal, the planar B3O6anions are stacked in an alternating fashion with Ba and (Pb/Ba) atoms along [001]. A comparison is made with the structures of related solid solutions in the system Ba/Pb/B/O.

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Structural/Property Relationships for Optical Materials

MRS Proceedings ◽

10.1557/proc-329-215 ◽

1993 ◽

Vol 329 ◽

Author(s):

Vivien D.

Keyword(s):

Crystal Structure ◽

Optical Properties ◽

Electronic Structure ◽

Chemical Composition ◽

Field Strength ◽

Optical Materials ◽

Site Occupancy ◽

Laser Materials ◽

Crystal Field Strength ◽

The Matrix

AbstractIn this paper the relationships between the crystal structure, chemical composition and electronic structure of laser materials, and their optical properties are discussed. A brief description is given of the different laser activators and of the influence of the matrix on laser characteristics in terms of crystal field strength, symmetry, covalency and phonon frequencies. The last part of the paper lays emphasis on the means to optimize the matrix-activator properties such as control of the oxidation state and site occupancy of the activator and influence of its concentration.

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