Results 31 to 40 of about 3,896 (209)

Vertical Bridgman growth of sapphire-Seed crystal shapes and seeding characteristics

, 2014
The growth of sapphire by the traditional vertical Bridgman (VB) method was studied by using various shapes of seed crystals and tungsten (W) crucibles shaped to match the seeds. Approximately 2-in.
Osada, J, Kobayashi, T, Kobayashi, T, Yanagisawa, J, Yanagisawa, J, Osada, J, Kanno, K, Shinozuka, M, Hoshikawa, K, Miyagawa, C, Ohba, E, Saitou, Y, Miyagawa, C, Kanno, K, Hoshikawa, K, Saitou, Y, Ohba, E, Shinozuka, M   +17 more
core   +1 more source

The plane-to-cellular-to-dendrite transition of the shape of the crystallization front during the crystallization of Al–Cu alloys [PDF]

Journal of the Serbian Chemical Society, 2006
The evolution of the crystallization front from a planar to a dendritic one as a function of the GL/(Rc0) parameter was investigated during the crystallization of Al–Cu alloys by the vertical Bridgman method.
VESNA RADOJEVIC, ANDREJA VALCIC, SLOBODANKA NIKOLIC, ALEKSANDAR GOLUBOVIC   +3 more
doaj   +3 more sources

Low‐Angle Grain Boundaries and Re‐Segregation in Single‐Crystalline Ni‐Base Superalloys

Advanced Engineering Materials, EarlyView.
This work demonstrates that Re‐segregation at low‐angle grain boundaries (LAGBs) in Ni‐base superalloys is influenced by misorientation angle. Advanced microscopy and atom probe tomography reveal that higher misorientation angles increases Re‐segregation.
Alireza B. Parsa, Aparna Saksena, Alesander Kostka, Pascal Thome, Felicitas Scholz, Alexandre Mussi, Christoph Somsen, Baptiste Gault, Jan Frenzel, Gunther Eggeler   +9 more
wiley   +1 more source

Element Segregation and Electrical Properties of PMN-32PT Grown Using the Bridgman Method

Crystals, 2019
A single crystal with nominal composition Pb(Mg1/3Nb2/3)O3-32PbTiO3 (PMN-32PT) was grown by the Bridgman technique. Crystal orientation was determined using the rotating orientation X-ray diffraction (RO-XRD).
Sijia Wang, Zengzhe Xi, Pinyang Fang, Xiaojuan Li, Wei Long, Aiguo He   +5 more
doaj   +1 more source

Microscopic Insights into Magnetic Warping and Time‐Reversal Symmetry Breaking in Topological Surface States of Rare‐Earth‐Doped Bi2Te3

Advanced Materials, EarlyView.
Magnetic doping of the topological insulator Bi2Te3 with erbium adatoms induces out‐of‐plane magnetism and breaks time‐reversal symmetry, opening a Dirac gap and driving a Fermi surface transition from hexagonal to star‐of‐David geometry. Microscopy, spectroscopy, and magnetic dichroism reveal atomically controlled magnetic interactions that tailor the
Beatriz Muñiz Cano, Fabián Calleja, Ji Dai, Massimo Tallarida, Vera Marinova, Alessandro Barla, Marc G. Cuxart, Pierluigi Gargiani, Gonzalo N. Molina, José Angel Silva‐Guillén, Adriana I. Figueroa, Kevin García‐Díez, Sergio O. Valenzuela, Aitor Mugarza, Amadeo L. Vázquez de Parga, Rodolfo Miranda, Francisco Guinea, Manuela Garnica, Miguel A. Valbuena   +18 more
wiley   +1 more source

Influence of Impurities on the Radiation Response of the TlBr Semiconductor Crystal

Advances in Materials Science and Engineering, 2017
Two commercially available TlBr salts were used as the raw material for crystal growths to be used as radiation detectors. Previously, TlBr salts were purified once, twice, and three times by the repeated Bridgman method.
Robinson Alves dos Santos, Carlos Henrique de Mesquita, Júlio Batista Rodrigues da Silva, Caue de Melo Ferraz, Fabio Eduardo da Costa, João Francisco Trencher Martins, Roseli Fernandes Gennari, Margarida Mizue Hamada   +7 more
doaj   +1 more source

Thermal diffusivity of single crystal Bi0.9Sb0.1 [PDF]

Science of Sintering, 2010
A single crystal Bi0.9Sb0.1 ingot was synthesized using the Bridgman technique. Thermal diffusivity and electronic transport properties of single crystal cleaved plates (00l) were determined from PA photoacoustic phase and amplitude spectra obtained ...
Nikolić Pantelija M., Vujatović S.S., Ivetić T., Nikolić M.V., Cvetković O., Aleksić O.S., Blagojević V., Brankovic G., Nikolić N.   +8 more
doaj   +1 more source

Room‐Temperature Skyrmionic Synapse in 2D Ferromagnet Fe3GaTe2 Operating via Collective Spin Texture Transformation

Advanced Materials, EarlyView.
We demonstrate a neuromorphic synapse in 2D Fe3GaTe2 flakes. The device operates via a current‐driven transformation from a skyrmion‐lattice to a stripe‐domain state, yielding a linear anomalous Hall resistance response with a tunable slope to enable multiply‐accumulate operations. Simulations confirm its viability in artificial neural networks.
Jixiang Huang, Tongji Zhu, PeiYu Cai, Xiaoming Ma, Zhen Wang, Ruifu Zhang, Yi Hao, Jingdi Lu, Liubing He, Jun Xu, Yuejie Zhang, Wanjun Jiang, Jing Tao, Shiming Lei, Pavel Parchinskiy, Jing Teng, Lingfei Wang, Wei Niu, Elton J.G. Santos, Xiaoqian Zhang, Peng Li   +20 more
wiley   +1 more source

Exploring kink strengthening in WZ21 magnesium alloy via slow solidification and extrusion

Journal of Magnesium and Alloys
The Mg-Y-Zn magnesium alloy system is known for the presence of Long-Period Stacking Ordered (LPSO) phases that improves strength and ductility with minimal amounts of alloying elements.
Drahomír Dvorský, Yoshihito Kawamura, Shin-Ichi Inoue, Soya Nishimoto, Jiří Kubásek, Anna Boukalová, Miroslav Čavojský, Luděk Heller, Jan Duchoň, Dalibor Vojtěch   +9 more
doaj   +1 more source

Spectroscopic Properties of Pb²⁺-Doped BaF₂ Crystals

Crystals, 2023
Various concentrations of PbF2-doped BaF2 crystals were grown by the Bridgman method using a shaped graphite heater. The room temperature optical absorption spectra showed two UV absorption bands (labeled A and D), characteristic of the Pb2+ ions.
Gabriel Buse, Marius Stef, Irina Nicoara
doaj   +1 more source