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This work aimed first at growing high quality bulk $\alpha$-GeO$_2$ crystals in their Quartz iso-structural form ($\alpha$-SiO$_2$), using a high temperature flux method. By optimizing the flux composition and the geometry and orientation…

Optics · Physics 2025-01-23 Alexandra Pena , Corinne Felix , Bertrand Menaert , Benoit Boulanger

CuFeO$_2$ single crystals up to 50 mm in length and up to 10 mm in diameter were grown by the optical floating-zone method. Stoichiometric polycrystalline rods with a diameter of 6-12 mm were used as feed materials to produce crystals of…

Materials Science · Physics 2020-01-07 Nora Wolff , Tobias Schwaigert , Dietmar Siche , Darrell G. Schlom , Detlef Klimm

Single crystals of Ba0.6K0.4Fe2As2 with excellent quality have been successfully grown without fluxing agent through a simple one-step method for the first time. X-ray diffraction patterns demonstrate that the samples have high crystalline…

Superconductivity · Physics 2015-05-20 Chunlei Wang , Chao Yao , Lei Wang , Yanpeng Qi , Zhaoshun Gao , Dongliang Wang , Xianping Zhang , Yanwei Ma

We report a simple, reliable method to grow high quality BaFe$_{2-x}$Co$_x$As$_2$ single crystal samples without using any fluxing agent. The starting materials for the single crystal growth come from well-crystallized polycrystalline…

Superconductivity · Physics 2011-03-23 Changjin Zhang , Lei Zhang , Chuanying Xi , Langsheng Ling , Shun Tan , Yuheng Zhang

We report the optimized conditions for growing the high quality single crystals of candidate quantum spin-ice Pr2Hf2O7 using the optical floating-zone method. Large single crystals of Pr2Hf2O7 have been grown under different growth…

Strongly Correlated Electrons · Physics 2019-01-02 V. K. Anand , A. T. M. N. Islam , A. Samartzis , J. Xu , N. Casati , B. Lake

The TiO2 rich part of the (1-x) SrO + x TiO2 phase diagram 0.5 <= x <= 1.0 was redetermined and the eutectic point between SrTiO3 and TiO2 was found at x_eut=0.7700+/-0.0001; T_eut=(1449+/-3) deg C. From TiO2 rich melt solutions, x=0.75…

Materials Science · Physics 2017-11-06 Christo Guguschev , Detlef Klimm , Frank Langhans , Zbigniew Galazka , Dirk Kok , Uta Juda , Reinhard Uecker

We have attempted the crystal growth by the traveling-solvent floating-zone (TSFZ) method of La_{2-x}Ba_xCuO_4 with x~1/8, where the superconductivity is strongly suppressed. Under flowing O_2-gas of a high pressure (4 bars), we have…

Superconductivity · Physics 2009-11-07 T. Adachi , T. Noji , Y. Koike

Co-doped iron arsenic single crystal of BaFe1.87Co0.13As2 with dimension up to 20 x 10 x 2 mm3 were grown by a nucleation pole: an alumina stick served as nucleation center during growth. The high quality of crystalline was illustrated by…

Superconductivity · Physics 2015-05-13 D. L. Sun , Y. Liu , J. T. Park , C. T. Lin

The wealth of structural phases seen in the rare-earth disilicate compounds promises an equally rich range of interesting magnetic properties. We report on the crystal growth by the optical floating zone method of members of the rare-earth…

Piezoelectric quartz SiO2 crystals are widely used in industry as oscillators. As a natural mineral, quartz and its relevant silicates are also of interest of geoscience and mineralogy. However, the nucleation and growth of quartz crystals…

Materials Science · Physics 2021-09-03 Silang Zhou , Jordi Antoja-Lleonart , Pavan Nukala , Vaclav Ocelik , Nick R. Lutjes , Beatriz Noheda

(La,Ce)OBiS2 single crystals are successfully grown using CsCl flux. The obtained single crystals have a plate-like shape with a size of 0.5-2.0 mm and a well-developed ab-plane. The thickness of the crystals increases with a decrease in…

We report the growth of mm-sized Pmnb-Li2FeSiO4 single crystals by means of the optical floating-zone method at high argon pressure and describe the conditions required for a stable growth process. The crystal structure is determined and…

Measurements of the anisotropic properties of single crystals play a crucial role in probing the physics of new materials. Determining a growth protocol that yields suitable high-quality single crystals can be particularly challenging for…

Materials Science · Physics 2017-06-20 W. R. Meier , T. Kong , S. L. Bud'ko , P. C. Canfield

We have grown cubic centimetre-size crystals of YBa2Cu3Ox suitable for neutron studies, by a top-seeded melt-growth technique. Growth conditions were optimized with an eye toward maximizing phase purity. It was found that the addition of 2%…

We have grown underdoped (x = 0.11, 0.12) and optimally doped (x = 0.16) La2-xSrxCuO4 (LSCO) crystals by traveling-solvent floating-zone (TSFZ) technique. In order to obtain LSCO single crystals of high quality, we have made much effort to…

Superconductivity · Physics 2009-01-23 Xiaoli Shen , Zhengcai Li , Caixia Shen , Wei Lu , Xiaoli Dong , Fang Zhou* , Zhongxian Zhao

The oscillating temperature technique was successfully employed to grow large and composition homogeneous CaFeAsF single crystals due to the reduction of nuclei number by temperature oscillation. The largest as-grown CaFeAsF single crystal…

Superconductivity · Physics 2022-03-02 Ming-Wei Ma , Binbin Ruan , Menghu Zhou , Yadong Gu , Qingsong Yang , Junnan Sun , Zhi-An Ren

Delafossite oxide CuAlO2 has engaged great attention as a promising p-type conducting oxide. In this work, high-quality CuAlO2 single crystals with a size of several millimeters (mm) are successfully achieved with a reactive crucible…

Materials Science · Physics 2022-11-23 Du hyung Kim , Minsik Kong , Myeongjun Kang , Minjae Kim , Seohee Kim , Youngwook Kim , Sangmoon Yoon , Jong Mok Ok

Single crystals of superconducting KxFe2-ySe2 have been grown with the optical floating-zone technique under application of 8 bar of argon pressure. We found that large and high quality single crystals with dimensions of ~\varnothing6…

Superconductivity · Physics 2012-07-09 Y. Liu , Z. C. Li , W. P. Liu , G. Friemel , D. S. Inosov , R. E. Dinnebier , Z. J. Li , C. T. Lin

We report on the growth of Y2Ti2O7 single crystals by optical floating zone technique. X-ray diffraction and Raman spectroscopy studies confirm the structural quality of the crystal. The UV-Vis optical studies reveal that the grown crystals…

Materials Science · Physics 2020-06-15 M. Suganya , K. Ganesan , P. Vijayakumar , Amirdha Sher Gill , R. Ramaseshan , S. Ganesamoorthy

We report a systematic study on the crystal growth of the rare-earth titanates $R_2$Ti$_2$O$_7$ ($R$ = Gd, Tb, Dy, Ho, Y, Er, Yb and Lu) and Y-doped Tb$_{2-x}$Y$_x$Ti$_2$O$_7$ ($x$ = 0.2 and 1) using an optical floating-zone method.…

Strongly Correlated Electrons · Physics 2013-11-13 Q. J. Li , L. M. Xu , C. Fan , F. B. Zhang , Y. Y. Lv , B. Ni , Z. Y. Zhao , X. F. Sun
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