TaS2 (2H-phase) 2H-二硫化钽晶体

产品编号:2D-00030
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大包装询盘
产品名称: TaS2 (2H-phase) 2H-二硫化钽晶体

环境稳定的2H-TaS2晶体已经在我们通过通量区法或化学蒸汽传输(CVT)技术合成。2H-TaS2是一种具有电荷密度波(不相称CDW)的金属。根据缺陷浓度的不同,它在1-2K处有超导跃迁。它在低于80K的温度下变成CDW金属。TaS2晶体的2H相和1T相均表现出CDW性质,但CDW性质的起始温度差异较大(1T~175K,其中2H~80K)。我们的TaS2晶体是完美的分层,在0001方向裂开,具有超低的缺陷浓度。熔剂区生长的2H-TaS2晶体具有保证的CDW性质。欲下载我们的1T-TaS2水晶,请点击这里。

通量区与CVT生长方法:众所周知,TaS2晶体中的污染和缺陷会影响CDW的性质。(温度开始,观察能力,板面阻力)。磁通带技术是一种用于合成真正电子级vdW晶体的无卤化物和慢生长技术。该方法不同于化学蒸汽输运(CVT)技术,生长速度快(2周),结晶质量差;通量法需要3个月,结晶速度慢,原子结构完美,结晶无杂质。在检查期间,只需声明哪种类型的生长过程是首选的。除非另有说明,2Dsemiconductors以Flux zone晶体作为默认选择。

Environmentally stable 2H-TaS2 crystals have been synthesized at our facilities through flux zone method or chemical vapor transport (CVT) technique. 2H-TaS2 is a metal with charge density waves (incommensurate CDW). It has superconducting transition at around 1-2K depending on the defect concentration. It becomes CDW metal at temperatures lower than 80K. While both 2H- and 1T-phase TaS2 crystals exhibit CDW behavior, temperature onset for CDW behavior show considerable differences (1T~175K where as 2H~80K). Our TaS2 crystals are perfectly layered, cleaved in 0001 direction, with ultra-low defect concentration. Flux zone grown 2H-TaS2 crystals come with guaranteed CDW behavior. For our 1T-TaS2 crystals please click here.

Flux zone vs. CVT growth method: Contamination and defects in TaS2 crystals are well known to influence CDW behavior. (temperature onset, ability to observe, sheet resistance). Flux zone technique is a halide free and slow growth technique used for synthesizing truly electronic grade vdW crystals. This method distinguishes itself from chemical vapor transport (CVT) technique provides quick (~2 weeks) growth but poor crystalline quality while flux method takes ~3 months, ensures slow crystallization for perfect atomic structuring, and impurity free crystal growth. During check out just state which type of growth process is preferred. Unless otherwise stated, 2Dsemiconductors ships Flux zone crystals as default choice.

Properties of 2H phase TaS2 crystals - 2Dsemiconductors USA

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