Single crystal growth by the traveling solvent technique: A review

Koohpayeh, S. M.

doi:10.1016/j.pcrysgrow.2016.03.001

Cited by 34 publications

(24 citation statements)

References 46 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…We attempted the traveling-solvent floating zone method. A solvent pellet of 70:30 mol% SiO 2 :Yb 2 O 3 was used in the TSFZ type of crystal growth [16] as an attempt to lower the melting point (following the liquidus curve in Figure 1 to lower mol% SiO 2 ) so as to potentially reduce the cracking problem that lead to multi-crystals in the previous attempt. The growth atmosphere was O 2 at a static pressure of 1 atm.…”

Section: Crystal Growth Using Optical Floating Zone Methodsmentioning

confidence: 99%

Crystal Growth of Quantum Magnets in the Rare-Earth Pyrosilicate Family R2Si2O7 (R = Yb, Er) Using the Optical Floating Zone Method

et al. 2019

View full text Add to dashboard Cite

We report on the crystal growth of rare-earth pyrosilicates, R 2Si 2O 7 for R = Yb and Er using the optical floating zone method. The grown crystals comprise members from the family of pyrosilicates where the rare-earth atoms form a distorted honeycomb lattice. C-Yb 2Si 2O 7 is a quantum dimer magnet with field-induced long range magnetic order, while D-Er 2Si 2O 7 is an Ising-type antiferromagnet. Both growths resulted in multi-crystal boules, with cracks forming between the different crystal orientations. The Yb 2Si 2O 7 crystals form the C-type rare-earth pyrosilicate structure with space group C 2 / m and are colorless and transparent or milky white, whereas the Er-variant is D-type, P 2 1 / b , and has a pink hue originating from Er 3 +. The crystal structures of the grown single crystals were confirmed through a Rietveld analysis of the powder X-ray diffraction patterns from pulverized crystals. The specific heat of both C-Yb 2Si 2O 7 and D-Er 2Si 2O 7 measured down to 50 mK indicated a phase transition at T N ≈ 1.8 K for D-Er 2Si 2O 7 and a broad Schottky-type feature with a sharp anomaly at 250 mK in an applied magnetic field of 0.8T along the c-axis in the case of C-Yb 2Si 2O 7 .

show abstract

Section: Crystal Growth Using Optical Floating Zone Methodsmentioning

confidence: 99%

Crystal Growth of Quantum Magnets in the Rare-Earth Pyrosilicate Family R2Si2O7 (R = Yb, Er) Using the Optical Floating Zone Method

et al. 2019

View full text Add to dashboard Cite

show abstract

“…Sample D (∼10 mm×5 mm) was prepared using a traveling solvent technique, as detailed in Ref. 16. For samples A and B, their natural (112) surfaces were investigated.…”

Section: Experimental Methodsmentioning

confidence: 99%

Nonuniform carrier density in Cd3As2 evidenced by optical spectroscopy

et al. 2018

View full text Add to dashboard Cite

We report the detailed optical properties of Cd3As2 crystals in a wide parameter space: temperature, magnetic field, carrier concentration and crystal orientation. We investigate high-quality crystals synthesized by three different techniques. In all the studied samples, independently of how they were prepared and how they were treated before the optical experiments, our data indicate conspicuous fluctuations in the carrier density (up to 30%). These charge puddles have a characteristic scale of 100 µm, they become more pronounced at low temperatures, and possibly, they become enhanced by the presence of crystal twinning. The Drude response is characterized by very small scattering rates (∼ 1 meV) for as-grown samples. Mechanical treatment, such as cutting or polishing, influences the optical properties of single crystals, by increasing the Drude scattering rate and also modifying the high frequency optical response. Magneto-reflectivity and Kerr rotation are consistent with electron-like charge carriers and a spatially non-uniform carrier density. arXiv:1712.03147v2 [cond-mat.mtrl-sci]

show abstract

“…The steady lamp power during the growth therefore indicates an unchanging stoichiometry of the molten zone: the material leaving the molten zone (the grown crystal) is identical in composition to the material entering the molten zone (the stoichiometric feed rod). 40, 41 The quality and purity of this crystal were analyzed by Rietveld refinement to the XRD data. The lattice parameter does not change appreciably over the 40 mm length of the grown crystal: a =10.03066(6)Å at the start and 10.03104(2)Å at the end.…”

Section: B Single Crystalmentioning

confidence: 99%

Impact of stoichiometry ofYb2Ti2O7on its physical properties

et al. 2017

View full text Add to dashboard Cite

A series of Yb2+xTi2−xO 7−δ doped samples demonstrates the effects of off-stoichiometry on Yb2Ti2O7's structure, properties, and magnetic ground state via x-ray diffraction, specific heat, and magnetization measurements. A stoichiometric single crystal of Yb2Ti2O7 grown by the traveling solvent floating zone technique (solvent = 30 wt% rutile TiO2 and 70 wt% Yb2Ti2O7) is characterized and evaluated in light of this series. Our data shows that upon positive x doping, the cubic lattice parameter a increases and the Curie-Weiss temperature θCW decreases. Heat capacity measurements of stoichiometric Yb2Ti2O7 samples exhibit a sharp, first-order peak at T = 268(4) mK that is suppressed in magnitude and temperature in samples doped off ideal stoichiometry. The full entropy recovered per Yb ion is 5.7 J K −1 ≈ Rln2. Our work establishes the effects of doping on Yb2Ti2O7's physical properties, which provides further evidence indicating that previous crystals grown by the traditional floating zone method are doped off ideal stoichiometry. Additionally, we present how to grow high-quality colorless single crystals of Yb2Ti2O7 by the traveling solvent floating zone growth method.

show abstract

Single crystal growth by the traveling solvent technique: A review

Cited by 34 publications

References 46 publications

Crystal Growth of Quantum Magnets in the Rare-Earth Pyrosilicate Family R2Si2O7 (R = Yb, Er) Using the Optical Floating Zone Method

Crystal Growth of Quantum Magnets in the Rare-Earth Pyrosilicate Family R2Si2O7 (R = Yb, Er) Using the Optical Floating Zone Method

Nonuniform carrier density in Cd3As2 evidenced by optical spectroscopy

Impact of stoichiometry ofYb2Ti2O7on its physical properties

Contact Info

Product

Resources

About