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1. WO2020068183 - ANISOTROPIC MATERIALS AND METHODS OF FORMING ANISOTROPIC MATERIALS EXHIBITING HIGH OPTICAL ANISOTROPY

Publication Number WO/2020/068183
Publication Date 02.04.2020
International Application No. PCT/US2019/034067
International Filing Date 24.05.2019
IPC
C30B 29/46 2006.01
CCHEMISTRY; METALLURGY
30CRYSTAL GROWTH
BSINGLE-CRYSTAL GROWTH; UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL OR UNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL; REFINING BY ZONE-MELTING OF MATERIAL; PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; APPARATUS THEREFOR
29Single crystals or homogeneous polycrystalline material with defined structure characterised by the material or by their shape
10Inorganic compounds or compositions
46Sulfur-, selenium- or tellurium-containing compounds
C01F 17/00 2006.01
CCHEMISTRY; METALLURGY
01INORGANIC CHEMISTRY
FCOMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE EARTH METALS
17Compounds of rare earth metals
C01G 23/00 2006.01
CCHEMISTRY; METALLURGY
01INORGANIC CHEMISTRY
GCOMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F94
23Compounds of titanium
CPC
C01G 3/04
CCHEMISTRY; METALLURGY
01INORGANIC CHEMISTRY
GCOMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
3Compounds of copper
04Halides
Applicants
  • UNIVERSITY OF SOUTHERN CALIFORNIA [US]/[US]
  • WISCONSIN ALUMNI RESEARCH FOUNDATION [US]/[US]
Inventors
  • NIU, Shanyuan
  • JOE, Graham
  • KATS, Mikhail A.
  • RAVICHANDRAN, Jayakanth
Agents
  • LANGTON, Grant T.
Priority Data
62/676,66425.05.2018US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) ANISOTROPIC MATERIALS AND METHODS OF FORMING ANISOTROPIC MATERIALS EXHIBITING HIGH OPTICAL ANISOTROPY
(FR) MATÉRIAUX ANISOTROPES ET PROCÉDÉS DE FORMATION DE MATÉRIAUX ANISOTROPES PRÉSENTANT UNE ANISOTROPIE OPTIQUE ÉLEVÉE
Abstract
(EN)
A method for forming a crystalline material having an anisotropic, quasi-one-dimensional crystal structure is disclosed. In various embodiments, the method includes: mixing a plurality of precursor materials together to form a combined precursor material, the plurality of precursor materials including a transition-metal ion or a main group ion and at least one of an alkaline earth ion or an alkali metal ion; and reacting the combined precursor material to obtain the crystalline material, the crystalline material having a formula ABX3, wherein A is the at least one of the alkaline earth ion or the alkali metal ion and B is the transition-metal ion surrounded by six anions (X), and wherein the quasi-one-dimensional anisotropic crystal provides a birefringence of at least 0.03, defined as the absolute difference in the real part of the complex-refractive-index values along different crystal axes, in at least a portion of one or both of the visible-wave spectrum or the infrared spectrum.
(FR)
L'invention concerne un procédé de formation d'un matériau cristallin ayant une structure cristalline anisotrope quasi-unidimensionnelle. Dans divers modes de réalisation, le procédé comprend les étapes consistant à : mélanger une pluralité de matériaux précurseurs pour former un matériau précurseur combiné, la pluralité de matériaux précurseurs comprenant un ion de métal de transition ou un ion de groupe principal et un ion de terre alcaline et/ou un ion de métal alcalin; et faire réagir le matériau précurseur combiné pour obtenir le matériau cristallin, le matériau cristallin ayant une formule ABX3, où A est l'ion de terre alcaline et/ou l'ion de métal alcalin et B est l'ion de métal de transition entouré par six anions (X), et le cristal anisotrope quasi-unidimensionnel fournissant une biréfringence d'au moins 0,03, définie comme la différence absolue dans la partie réelle des valeurs d'indice de réfraction complexe le long de différents axes du cristal, dans au moins une partie du spectre d'ondes visibles ou du spectre infrarouge ou dans les deux.
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