Femtosecond pump-probe characterization of high-pressure grown Al x Ga 1-x N single crystals

2009 ◽  
Author(s):  
Jie Zhang ◽  
A. Belousov ◽  
S. Katrych ◽  
J. Jun ◽  
J. Karpinski ◽  
...  
Keyword(s):  
High Pressure ◽  
Single Crystals ◽  
Pump Probe

scholarly journals Picosecond Acoustics Technique to Measure the Sound Velocities of Fe-Si Alloys and Si Single-Crystals at High Pressure

Minerals ◽  
2020 ◽  
Vol 10 (3) ◽  
pp. 214 ◽  
Author(s):  
Eric Edmund ◽  
Michel Gauthier ◽  
Daniele Antonangeli ◽  
Simon Ayrinhac ◽  
Silvia Boccato ◽  
...  
Keyword(s):  
High Pressure ◽  
Single Crystals ◽  
Acoustic Properties ◽  
Probe Laser ◽  
Laser Technique ◽  
Time Resolved ◽  
Pump Probe ◽  
Longitudinal Sound Velocity ◽  
Diamond Anvil ◽  
Complete Set

We describe here a time resolved pump-probe laser technique—picosecond interferometry—which has been combined with diamond anvil cells (DAC). This method enables the measurement of the longitudinal sound velocity up to Mbar pressure for any kind of material (solids, liquids, metals, insulators). We also provide a description of picosecond acoustics data analysis in order to determine the complete set of elastic constants for single crystals. To illustrate such capabilities, results are given on the pressure dependence of the acoustic properties for prototypical cases: polycrystal (hcp-Fe-5 wt% Si up to 115 GPa) and single-crystal (Si up to 10 GPa).

Synthesis and Characterization of a Cubic Iron Hydroxy Boracite

2011 ◽  
Vol 66 (2) ◽  
pp. 107-114 ◽  
Author(s):  
Stephanie C. Neumair ◽  
Johanna S. Knyrim ◽  
Oliver Oeckler ◽  
Reinhard Kaindl ◽  
Hubert Huppertz
Keyword(s):  
Crystal Structure ◽  
High Pressure ◽  
High Temperature ◽  
Single Crystals ◽  
Room Temperature ◽  
Synthesis And Characterization ◽  
X Ray Diffraction ◽  
X Ray ◽  
High Pressure High Temperature

The cubic iron hydroxy boracite Fe3B7O13OH・1.5H2O was synthesized from Fe2O3 and B2O3 under high-pressure/high-temperature conditions of 3 GPa and 960 °C in a modified Walker-type multianvil apparatus. The crystal structure was determined at room temperature by X-ray diffraction on single crystals. It crystallizes in the cubic space group F4̄3c (Z = 8) with the parameters a = 1222.4(2) pm, V = 1.826(4) nm3, R1 = 0.0362, and wR2 = 0.0726 (all data). The B-O network is similar to that of other cubic boracites.

scholarly journals Characterization of the (Cu,C)Ba2Ca3Cu4O11+\delta single crystals grown under high pressure

2021 ◽  
Author(s):  
Chengping He ◽  
Xue Ming ◽  
Jin Si ◽  
Xiyu Zhu ◽  
Jinhua Wang ◽  
...  
Keyword(s):  
High Pressure ◽  
Single Crystals

Synthesis and characterization of gem diamond single crystals in Fe-C system under high temperature and high pressure

2020 ◽  
Vol 531 ◽  
pp. 125371
Author(s):  
Zhanke Wang ◽  
Hongan Ma ◽  
Shuai Fang ◽  
Zhiqiang Yang ◽  
Xinyuan Miao ◽  
...  
Keyword(s):  
High Pressure ◽  
High Temperature ◽  
Single Crystals ◽  
Synthesis And Characterization ◽  
Diamond Single Crystals

scholarly journals Iron(II)oxalate Dihydrate—Humboldtine: Synthesis, Spectroscopic and Structural Properties of a Versatile Precursor for High Pressure Research

Minerals ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 113
Author(s):  
Harald Müller ◽  
Léa Bourcet ◽  
Michael Hanfland
Keyword(s):  
High Pressure ◽  
Single Crystals ◽  
Spectroscopic Studies ◽  
Complete Characterization ◽  
Advanced Materials ◽  
Synthetic Approach ◽  
Oxalate Dihydrate ◽  
Deuterated Analogue ◽  
Synthetic Intermediate

Iron(II)oxalate dihydrate FeC2O4 × 2 H2O—humboldtine is not only an important synthetic intermediate, but also a key building block for the preparation of various advanced materials. Interestingly, FeC2O4 × 2 H2O can be transformed readily into phase-pure siderite FeCO3. The importance of siderite for earth sciences, in particular for the understanding of the deep carbon cycle of our planet, is paramount. The availability of high-quality single crystals of FeC2O4 × 2 H2O is crucial for diffraction or spectroscopic studies at high pressure. The present article describes a versatile synthetic approach to single crystals of FeC2O4 × 2 H2O and its deuterated analogue starting from metallic iron together with a complete characterization of the products obtained. The same protocol has been employed successfully for the preparation of 57FeC2O4 × 2 H2O, as required for Möβbauer spectroscopy. In addition, the pressure-dependence of the crystal and molecular structure of the title compound was investigated up to p ≥ 20 GPa.

Synthesis and characterization of diamonds using C3H5N3O as an organic additive under high pressure and high temperature

CrystEngComm ◽  
2018 ◽  
Vol 20 (36) ◽  
pp. 5457-5464 ◽  
Author(s):  
Longsuo Guo ◽  
Hongan Ma ◽  
Liangchao Chen ◽  
Ning Chen ◽  
Xinyuan Miao ◽  
...  
Keyword(s):  
High Pressure ◽  
High Temperature ◽  
Single Crystals ◽  
Organic Additive ◽  
Synthesis And Characterization ◽  
Diamond Single Crystals

In the NiMnCo–C system, diamond single crystals have been successfully synthesized by adding C3H5N3O as an organic additive under 5.5–6.2 GPa and 1280–1320 °C.

High pressure synthesis and characterization of single crystals of CuBa2Ca3Cu4Oy superconductor

1998 ◽  
Vol 298 (3-4) ◽  
pp. 209-216 ◽  
Author(s):  
K Tokiwa ◽  
Y Tanaka ◽  
A Iyo ◽  
Y Tsubaki ◽  
K Tanaka ◽  
...  
Keyword(s):  
High Pressure ◽  
Single Crystals ◽  
Synthesis And Characterization ◽  
High Pressure Synthesis ◽  
Pressure Synthesis

Time-resolved femtosecond optical characterization of multi-photon absorption in high-pressure-grown Al0.86Ga0.14N single crystals

2011 ◽  
Vol 110 (11) ◽  
pp. 113112 ◽  
Author(s):  
Jie Zhang ◽  
Andrey Belousov ◽  
Janusz Karpiński ◽  
Bertram Batlogg ◽  
Gary Wicks ◽  
...  
Keyword(s):  
High Pressure ◽  
Single Crystals ◽  
Optical Characterization ◽  
Photon Absorption ◽  
Time Resolved
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