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Photoelectric functional crystal m 3 re(po 4 ) 3 and its preparation method

A technology of crystal and piezoelectric single crystal, applied in the field of photoelectric functional crystal M3RE3 and its preparation

Active Publication Date: 2022-01-18
SHANDONG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although part M 3 RE(PO 4 ) 3 Types of compound powders were successfully prepared, but about M 3 RE(PO 4 ) 3 The single crystal of configuration and growth technique are still rarely reported, propose the present invention for this reason

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  • Photoelectric functional crystal m <sub>3</sub> re(po <sub>4</sub> ) <sub>3</sub> and its preparation method
  • Photoelectric functional crystal m <sub>3</sub> re(po <sub>4</sub> ) <sub>3</sub> and its preparation method
  • Photoelectric functional crystal m <sub>3</sub> re(po <sub>4</sub> ) <sub>3</sub> and its preparation method

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Embodiment Construction

[0008] Technical scheme of the present invention is as follows:

[0009] The general formula is M 3 RE(PO 4 ) 3 The photoelectric functional crystal of the present invention has a noncentrosymmetric structure and belongs to the -43m point group of the cubic crystal system, wherein M=Ba, Ca or Sr, RE=Y, La or Gd.

[0010] Preferably, the M 3 RE(PO 4 ) 3 Photoelectric functional crystals are selected from one of the following:

[0011] Ba 3 Y(PO 4 ) 3 Crystal, Ba 3 La(PO 4 ) 3 Crystal, Ca 3 Gd(PO 4 ) 3 Crystal, Sr 3 Y(PO 4 ) 3 Crystal, Sr 3 La(PO 4 ) 3 Crystal, Sr 3 Gd(PO 4 ) 3 Crystal; the corresponding chemical names are: yttrium barium phosphate crystal, lanthanum barium phosphate crystal, gadolinium calcium phosphate crystal, yttrium strontium phosphate crystal, lanthanum strontium phosphate crystal, gadolinium strontium phosphate crystal.

[0012] Further, the above crystal structure parameters are as follows:

[0013] Ba 3 Y(PO 4 ) 3 Crystal: cu...

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Abstract

The invention relates to a photoelectric functional crystal M 3 RE(PO 4 ) 3 and its preparation method. The M 3 RE(PO 4 ) 3 The crystal has a noncentrosymmetric structure and belongs to the cubic ‑43m point group, where M=Ba, Ca or Sr, RE=Y, La or Gd. The M 3 RE(PO 4 ) 3 Crystal growth methods include (1) polycrystalline material synthesis, using stoichiometric MCO 3 、RE 2 o 3 and phosphorus-containing compound and make the phosphorus-containing compound in excess, the raw material is sintered twice to obtain M 3 RE(PO 4 ) 3 Polycrystalline material; (2) polycrystalline material melting, (3) pulling method crystal growth. M prepared by the present invention 3 RE(PO 4 ) 3 The crystal is a high-quality single crystal, which not only has high optical transmittance and wide absorption edge, but also has no phase change from room temperature to melting point, no deliquescence, piezoelectric activity and nonlinear frequency conversion characteristics.

Description

technical field [0001] The invention relates to a photoelectric functional crystal M 3 RE(PO 4 ) 3 The invention and a preparation method thereof belong to the technical field of photoelectric functional crystals. Background technique [0002] Optoelectronic functional crystal materials, as key materials in high-tech fields such as microelectronics, optoelectronics, communications, aerospace and modern military technology, are valued by countries all over the world. The development of laser and optoelectronics has further promoted the development and application of functional crystals. The research and application of optoelectronic functional crystals in my country are at the forefront of the world, especially the research on inorganic nonlinear optical crystals is in the leading position in the world. Nevertheless, the current international competition in the field of optoelectronic functional crystals is increasingly fierce, and researchers in the field of crystal mate...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02F1/355C30B29/14C30B15/20
CPCC30B29/14C30B15/20
Inventor 于法鹏武广达樊梦迪李芳林程秀凤赵显
Owner SHANDONG UNIV
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