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The perovskite SrVO$_3$ is of interest for a variety of applications due to its simple metallic character and stability in reducing environments. Here we report the preparation of single-crystal SrVO$_3$ using the laser floating zone…

强关联电子 · 物理学 2022-03-02 Tanya Berry , Shannon Bernier , Gudrun Auffermann , Tyrel M. McQueen , W. Adam Phelan

We describe the crystal growth of high quality single crystals of the non-centrosymmetric superconductor, Ru7B3 by the floating zone technique, using an optical furnace equipped with xenon arc lamps. The crystals obtained are large and…

超导电性 · 物理学 2014-07-29 Ravi P. Singh , Natalia A. Parzyk , Martin R. Lees , Don McK Paul , Geetha Balakrishnan

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…

超导电性 · 物理学 2009-11-07 T. Adachi , T. Noji , Y. Koike

We report the growth of YFe2O4-\delta\ single crystals by the optical floating zone method, showing for the first time the same magnetization as highly stoichiometric (\delta = 0.00) powder samples and sharp superstructure reflections in…

材料科学 · 物理学 2015-08-13 Thomas Mueller , Joost de Groot , Joerg Strempfer , Manuel Angst

We explore two methods for single crystal growth of the theoretically proposed magnetic Weyl semimetals $R$AlGe ($R$ = Pr,Ce), which prove that a floating zone technique, being both crucible- and flux-free, is crucial to obtain perfectly…

材料科学 · 物理学 2019-06-28 P. Puphal , C. Mielke , N. Kumar , Y. Soh , T. Shang , M. Medarde , J. S. White , E. Pomjakushina

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…

超导电性 · 物理学 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

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…

超导电性 · 物理学 2015-05-20 Chunlei Wang , Chao Yao , Lei Wang , Yanpeng Qi , Zhaoshun Gao , Dongliang Wang , Xianping Zhang , Yanwei Ma

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…

超导电性 · 物理学 2015-05-13 D. L. Sun , Y. Liu , J. T. Park , C. T. Lin

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…

材料科学 · 物理学 2020-01-07 Nora Wolff , Tobias Schwaigert , Dietmar Siche , Darrell G. Schlom , Detlef Klimm

Pyrochlore $\rm Pr^{3+}_{2+x}Zr^{4+}_{2-x}O_{7-x/2}$ samples in the form of both powders $(-0.02 \le x \le 0.02)$ and bulk single crystals have been studied to elucidate the dependence of their magnetic, compositional and structural…

材料科学 · 物理学 2014-07-08 S. M. Koohpayeh , J. -J. Wen , B. A. Trump , C. L. Broholm , T. M. McQueen

High purity Na0.75CoO2 single crystals have been grown by floating zone method. We found the rotation of feed and seed rods play a crucial role in growing high quality single crystal. Systematic investigations suggest the occurrence of a…

强关联电子 · 物理学 2011-03-22 C. Sekar , S. Paulraj , P. Kanchana , B. Schupp-Niewa , R. Klingeler , G. Krabbes

High quality single crystals of BaFe$_{12}$O$_{19}$ were grown using the floating zone technique in flowing oxygen pressurized to 100 atm. Single crystal neutron diffraction was used to determine the nuclear and magnetic structure of…

材料科学 · 物理学 2015-06-25 H. B. Cao , Z. Y. Zhao , M. Lee , E. S. Choi , M. A. McGuire , B. C. Sales , H. D. Zhou , J. -Q. Yan , D. G. Mandrus

Here we demonstrate the floating zone crystal growth of the $J_\mathrm{eff}=1/2$ Mott insulator Sr$_2$IrO$_4$. Historically, the growth of iridates from a ternary melt has been precluded by the extreme vapor pressure of the metal oxide…

Large, high-purity single-crystals of hexagonal BN (h-BN) are essential for exploiting its many desirable and interesting properties. Here, we demonstrate via X-ray tomography, X-ray diffraction and scanning electron microscopy that h-BN…

Ni-doped LiMn0.95Ni0.05PO4 single crystals have been grown for the first time by the travelling-solvent floating-zone method at low Argon pressure. The grown sample exhibits large single crystalline grains as revealed by means of…

We report on the crystal growth of the quasi one-dimensional quantum spin chain compound SrCuO$_{2}$ and its doped variants containing magnetic cobalt (0.25%, 0.5%, 1% and 2.5%) and non-magnetic zinc (0.5\% and 1\%) impurities. Crystals are…

强关联电子 · 物理学 2015-01-13 Koushik Karmakar , Amartya Singh , Surjeet Singh , Amy Poole , Christian Rüegg

The interplay between unconventional superconductivity and quantum critical ferromagnetism in the U-Ge compounds represents an open problem in strongly correlated electron systems. Sample quality can have a strong influence on both of these…

Recent theoretical and experimental findings suggest that the long-known but not well understood low temperature resistance plateau of SmB6 may originate from protected surface states arising from a topologically non-trivial bulk band…

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…

超导电性 · 物理学 2011-03-23 Changjin Zhang , Lei Zhang , Chuanying Xi , Langsheng Ling , Shun Tan , Yuheng Zhang

Single crystals of A$_{1-x}$K$_x$Fe$_2$As$_2$ (A=Ba, Sr) with high quality have been grown successfully by FeAs self-flux method. The samples have sizes up to 4 mm with flat and shiny surfaces. The X-ray diffraction patterns suggest that…

超导电性 · 物理学 2009-11-13 Huiqian Luo , Zhaosheng Wang , Huan Yang , Peng Cheng , Xiyu Zhu , Hai-Hu Wen