2000年1月1日 · In contrast to former investigations revealing tetragonal or orthorhombic symmetry, our analysis showed that LaTe 2 crystallizes monoclinic in space group P1c1 with the lattice parameters a=919.0(1) pm, b=910.7(1) pm, c=907.0(1) pm, and β=90.04(1)° (Z=8).

LaTe2 is a layered charge density wave (CDW) material with exotic quantum properties. The crystal structure of LaTe2 is particular unique since 2D CDW LaTe2 is formed by square tiled tellurene layers separated by LaTe slabs crystallizing …

1997年2月1日 · The reflectivity spectra for the single crystals of LaTe 2 and CeTe 2 are measured at several temperatures in the photon energy range from 2 meV to 10.78 eV. The optical conductivity spectra are obtained by the Kramers-Kronig transformation of the reflectivity spectra.

LaTe2 crystallizes in the monoclinic Pc space group. The structure is three-dimensional. there are four inequivalent La3+ sites. In the first La3+ site, La3+ is bonded in a 9-coordinate geometry to nine Te+1.50- atoms. There are a spread of La–Te bond distances ranging from 3.28–3.46 Å.

2000年1月31日 · In contrast to former investigations revealing tetragonal or orthorhombic symmetry, our analysis showed that LaTe2 crystallizes monoclinic in space group P1c1 with the lattice parameters a=919.0...

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LaTe2 is a layered charge density wave (CDW) material with exotic quantum properties. The crystal structure of LaTe2 is particular unique since 2D CDW LaTe2 is formed by square tiled tellurene layers separated by LaTe slabs crystallizing …

2019年1月4日 · 本文对稀土碲化物La Te2_8体系进行了系统的TEM微结构特性分析.选区电f衍 射、X 射线能谱分析 (energy dispersive X-ray spectroscopy, EDX)、高分 辨率透射电子显微镜 (high resolution transmission electron microscopy, HRTEM)、HAADF-STEM综合分析表明，该体系结构调制和样品的化学计量比存在 密切关联，等化学计量比Ta Te2具有 (1/2) a的公度电荷密度波调制，少量 的缺陷引入，可以形成受掺杂量调节的 (1/2-a) a系列非公度电荷密度波 调制.在Te缺位 …

The crystal structure of LaTe2 is particular unique since 2D CDW LaTe2 is formed by square tiled tellurene layers separated by LaTe slabs crystallizing in layered undistorted tetragonal P4/nmm phase. Our crystals have been synthesized using high purity precursors to attain 6N pure vdW crystals with perfect exfoliation characteristics.

Here, we have grown single crystals of LaTe2-xSbx (x=0 and 0.4) with continuously adjustable CDW. High-pressure x-ray diffraction show LaTe2 does not undergo phase transition and keep robust...