Unusual redox behaviour of the magnetite/hematite core–shell structures processed by the laser floating zone method

2018 ◽  
Vol 47 (16) ◽  
pp. 5646-5651 ◽  
Author(s):  
N. M. Ferreira ◽  
M. C. Ferro ◽  
M. A. Valente ◽  
J. R. Frade ◽  
F. M. Costa ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Shell Morphology ◽  
Shell Structures ◽  
Core Shell ◽  
Floating Zone ◽  
Zone Method ◽  
Floating Zone Method ◽  
Redox Behaviour ◽  
Electrical And Magnetic Properties ◽  
Growth Atmosphere

Impact of the growth atmosphere on shell morphology, affecting the electrical and magnetic properties of fibres.

LFZ growth of (Bi, Pb)–Sr–Ca–Cu–O superconducting fibers

1991 ◽  
Vol 6 (4) ◽  
pp. 699-703 ◽  
Author(s):  
G.F. de la Fuente ◽  
R. Navarro ◽  
F. Lera ◽  
C. Rillo ◽  
J. Bartolomé ◽  
...  
Keyword(s):  
Partial Pressure ◽  
Growth Rates ◽  
Floating Zone ◽  
Partial Pressure Of Oxygen ◽  
X Ray Diffraction ◽  
Zone Method ◽  
Floating Zone Method ◽  
X Ray ◽  
Fiber Properties ◽  
Growth Atmosphere

Powder x-ray diffraction, d.c. and a.c. susceptibilities, and SEM have been used to study (Bi1−xPbx)2Sr2Ca2Cu3O10−δ fibers grown by the Laser Floating Zone method. The well-oriented, long-grained superconductor fiber properties are shown to be highly dependent on the partial pressure of oxygen in the growth atmosphere, as well as on fiber pulling rate. Slowly grown fibers contain initially the 2212 (80 K) phase; the 2223 (110 K) phase also appears upon annealing in air. Faster growth rates result in fibers that contain a mixture of the 2212 and 2201 phases and, in this case, long annealing procedures are necessary to observe the 2223 phase.

Magnetite/hematite core/shell fibres grown by laser floating zone method

2013 ◽  
Vol 278 ◽  
pp. 203-206 ◽  
Author(s):  
N.M. Ferreira ◽  
A. Kovalevsky ◽  
M.A. Valente ◽  
F.M. Costa ◽  
J. Frade
Keyword(s):  
Core Shell ◽  
Floating Zone ◽  
Zone Method ◽  
Floating Zone Method

Crystal growth and magnetic properties of GdFeO3 crystals by floating zone method

2014 ◽  
Vol 185 ◽  
pp. 14-17 ◽  
Author(s):  
Anhua Wu ◽  
Zhanliang Wang ◽  
Bo Wang ◽  
Xiaolei Ban ◽  
Linwen Jiang ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Crystal Growth ◽  
Floating Zone ◽  
Zone Method ◽  
Floating Zone Method

Defect Optical and Scintillation Properties of Lu2Si2O7:Ce Single Crystal Grown by Floating Zone Method

2013 ◽  
Vol 28 (8) ◽  
pp. 891-895
Author(s):  
He FENG ◽  
Guo-Hao REN ◽  
Dong-Zhou DING ◽  
Huan-Ying LI ◽  
Jun XU ◽  
...  
Keyword(s):  
Single Crystal ◽  
Floating Zone ◽  
Zone Method ◽  
Floating Zone Method

Photoluminescence, scintillation and thermoluminescence properties of Ce-doped SrLaAl3O7 crystals synthesized by the optical floating zone method

2021 ◽  
Vol 112 ◽  
pp. 110782
Author(s):  
Kenta Igashira ◽  
Daisuke Nakauchi ◽  
Takumi Kato ◽  
Noriaki Kawaguchi ◽  
Takayuki Yanagida
Keyword(s):  
Floating Zone ◽  
Zone Method ◽  
Floating Zone Method

scholarly journals Single-Crystal Growth of Sr2RuO4 by the Floating-Zone Method Using an Infrared Image Furnace with Improved Halogen Lamps

Crystals ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 392
Author(s):  
Naoki Kikugawa ◽  
Dmitry A. Sokolov ◽  
Tohru Nagasawa ◽  
Andrew P. Mackenzie
Keyword(s):  
Crystal Growth ◽  
Single Crystal ◽  
Infrared Image ◽  
Single Crystal Growth ◽  
Molten Zone ◽  
Floating Zone ◽  
Unconventional Superconductor ◽  
Zone Method ◽  
Floating Zone Method ◽  
Halogen Lamps

We report the single-crystal growth of the unconventional superconductor Sr2RuO4, on which research has reached a turning point recently. In order to optimize the quality of crystals grown by the floating-zone method using an infrared image furnace, we focus on an improvement of the structure of the filament in the halogen lamps. By reducing the thickness of the total filament, the form of the molten zone was narrowed. More importantly, the molten zone was observed to be more stable during the growth process. Finally, we obtained the crystals with a length of 12 cm. Additionally, the grown crystal has high quality, displaying the 1.5 K transition temperature expected only for the purest crystals. We also discuss the availability of the newly developed halogen lamps.

scholarly journals Hall Effects of Rutile Crystals Grown by the Floating Zone Method

1991 ◽  
Vol 32 (9) ◽  
pp. 879-881 ◽  
Author(s):  
Shin Tsunekawa ◽  
Hiroshi Machida ◽  
Masashi Suezawa ◽  
Tsuguo Fukuda
Keyword(s):  
Floating Zone ◽  
Zone Method ◽  
Floating Zone Method ◽  
Hall Effects

The growth of barium tetratitanate (BaTi4O9) single crystals by the floating zone method

1986 ◽  
Vol 76 (2) ◽  
pp. 311-316 ◽  
Author(s):  
Isao Tanaka ◽  
Hironao Kojima ◽  
Fumiaki Sudo
Keyword(s):  
Single Crystals ◽  
Floating Zone ◽  
Zone Method ◽  
Floating Zone Method
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