GB/T 39131-2020 in English

VALID

Terms and definitions of synthetic crystal materials

Issued on:2020-10-11
Implemented on:2021-09-01
File Format:PDF
Delivery:Via email within 5 business days

Price(USD)： $430.00
$418.00

Standard No:	GB/T 39131-2020
Document status:	VALID
Title in English:	Terms and definitions of synthetic crystal materials
Title in Chinese:	人工晶体材料术语
Language:	English
File Format:	Electronic (PDF)
Delivery:	Via email within 5 business days
Issued on:	2020-10-11
Implemented on:	2021-09-01
ICS Classification:	01.040.01-Generalities. Terminology. Standardization. Documentation (Vocabularies)
Chinese Classification:	Q65-Artificial lens
Professional Classification:	GB-National Standard
Related Keywords:	artificial crystal materials synthetic crystal materials introduction standard framework crystal system crystal structure high-quality crystal comparison
Related Topics:	the crystal Amorphous Material Composition crystal single crystal material Crystalline crystal piezoelectric crystal material structural crystal material crystal structure crystal interface electrode material dendrite Crystal English artificial pigment various crystal materials crystal material Artificial materials are chemical materials surface crystal crystal orientation crystal crystal crystal orientation Material crystal phase analysis plastic human body artificial lens crystal phase Tira method Lattice material human body material rare earth crystal artificial system human material Crystal processing body material Series IOL Facet family Lattice material Crystal morphology In vitro artificial rare earth crystal crystal engineering Crystalline silicon material crystal phase crystal plane crystal plane plastic human body crystal material twin crystal GBT39131 GB/T 39131-2020 Dichroism of crystalline materials PPLN crystal processor ASS Body Art Network artificial material standards Frequency doubling crystal material quality Basics of Chinese crystal materials

《GB/T 39131-2020人工晶体材料术语》由TC461（全国人工晶体标准化技术委员会）归口，主管部门为中国建筑材料联合会。

Introduction

Standard Framework and Technology Evolution

GB/T39131-2020, as my country's first systematic terminology standard for artificial crystal materials, has established a terminology system covering three dimensions: crystal structure, growth method, and defect characterization. Compared with ISO 18473:2015, 12 new Chinese-specific material terms such as rare earth crystal and quantum dot crystal have been added.

Core Terminology Analysis

Term Classification	Key Definition	Technical Characteristics
Semiconductor Crystal	Conductive Performance is Between Conductors and Insulators	Band Gap 0.2-3.5eV
Bridgeman Method	Solidification Growth through Temperature Gradient Zone	Applicable to Materials with Melting Point <2000℃
Dislocation Density	Total Length of Dislocation Lines per Unit Volume	＜10³cm^-2 is a high-quality crystal

Comparison of growth methods

Czochralski method and floating zone method Typical application differences:

The Czochralski method is the preferred method for growing silicon single crystals (up to 300mm in diameter)
The floating zone method is used for refractory oxides (no crucible pollution)
The ammonothermal method (equilibrium vapor pressure) is suitable for gallium nitride

Implementation suggestions

Material research and development should give priority to the use of standard defined crystal system, point group and other structural descriptions
Test reports must use standardized defect terms such as growth streaks and envelopes
Processing parameters should refer to the tolerance requirements in Chapter 6

More samples: GB 18306-2015 DL/T 5154-2012 QC/T 942-2021

Sample only — not a preview of GB/T 39131-2020

Loading PDF document...

Error loading PDF. Please make sure the file is valid and try again.