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Layered copper oxychloride powder material and preparation method thereof

A technology of copper hydroxychloride and powder materials, applied in the direction of copper chloride, copper halide, etc., can solve the problems of no symmetry breaking and inability to explain the physical phase category.

Active Publication Date: 2021-06-04
JILIN UNIV
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  • Abstract
  • Description
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Problems solved by technology

Compared with traditional magnetically ordered materials, the ground state of quantum spin liquids does not have a completely definite order parameter to represent, and there is no symmetry breaking at the same time. Landau phase transition theory cannot explain this phase category

Method used

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  • Layered copper oxychloride powder material and preparation method thereof
  • Layered copper oxychloride powder material and preparation method thereof
  • Layered copper oxychloride powder material and preparation method thereof

Examples

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Embodiment 1

[0022] Example 1, the synthesis of layered orthorhombic copper hydroxychloride (Cu(OH)Cl) crystal material.

[0023] The synthesis of copper hydroxychloride (Cu(OH)Cl) mixed powder containing layered orthorhombic structure is carried out in a symmetrical diamond anvil. The anvil is pressed by a symmetrical diamond. The size of the diamond anvil is 0.3mm, the gasket is made of T301 stainless steel sheet. A small hole with a diameter of 0.15 mm was drilled on the pre-pressed gasket, a small piece of ruby ​​was placed in it, and methyl alcohol (methanol:ethanol=4:1 by volume) was used as a pressure medium. The calibration of the pressure adopts the technology of standard ruby ​​fluorescent calibration pressure. The pure copper hydroxychloride (Cu(OH)Cl) crystal with layered monoclinic structure synthesized by the solid-state method was put into a diamond counter-anvil press, and the sample was pressurized to 28.4GPa. At 18.7GPa, a part (about 30%) of copper hydroxychloride (Cu(...

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Abstract

The invention discloses a layered copper oxychloride powder material and a preparation method thereof, and belongs to the technical field of preparation of quasi-two-dimensional layered metal hydroxyl halide crystal materials. Pure copper oxychloride (Cu(OH)Cl) crystal powder with a layered monoclinic structure is used as an initial raw material, the initial raw material is pressurized to 18.7-28.4 GPa in a high-pressure device (DAC), the pressure is relieved to normal pressure, and the powder material with the copper oxychloride (Cu(OH)Cl) with two different structures mixed and coexistent is obtained. The copper oxychloride Cu(OH)Cl crystal material which can still exist stably under normal pressure and has a layered orthogonal structure is obtained through the high-pressure synthesis method for the first time, and the copper oxychloride Cu(OH)Cl crystal material is expected to be applied to the fields of quantum spinning liquid, spintronics, anti-contusion magnetic materials and the like; and the method has the advantages of simple process, room-temperature synthesis, short synthesis time, high repeatability and the like.

Description

technical field [0001] The invention belongs to the technical field of preparation of quasi-two-dimensional layered metal hydroxyhalide crystal materials, in particular to a layered orthorhombic copper hydroxychloride (Cu(OH)Cl) crystal material synthesized under high pressure to obtain atmospheric pressure A method for stabilizing copper hydroxychloride (Cu(OH)Cl) crystalline materials with layered orthorhombic structures. Background technique [0002] Triangular lattice antiferromagnetic damping material is the main research object of magnetic damping material, it has many new magnetic states, such as quantum spin liquid; quantum spin liquid is a new type of magnetic ground state, in 1973 by P.W. Anderson proposed; it refers to a new quantum state in which magnetic order does not appear in the system at zero temperature due to the existence of a strong quantum fluctuation. Compared with traditional magnetically ordered materials, the ground state of quantum spin liquids d...

Claims

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Application Information

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IPC IPC(8): C01G3/05
CPCC01G3/05C01P2002/72C01P2004/03C01P2004/61
Inventor 张剑余红田辉王美玲张洋崔航崔啟良
Owner JILIN UNIV
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