Vertical optical floating zone furnace: Principles of irradiation profile formation

Souptel, D.; Löser, W.; Behr, G.

doi:10.1016/j.jcrysgro.2006.12.042

Cited by 41 publications

(26 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The value is somewhat lower than dT/dz ≈ 80 K/mm for Pr 2 PdSi 3 [10]. This steep gradient is typical for the vertical FZ technique characterized by a sharply focused radiation profile [19]. This is a prerequisite for the suppression of the morphological instability of the crystal/melt interface at moderate growth rates despite the sizeable composition difference between the crystal and the melt in the floating zone.…”

Section: Methodsmentioning

confidence: 89%

Crystal growth of the intermetallic compound Nd₂PdSi₃

Löser

Tang

et al. 2011

Cryst. Res. Technol.

Self Cite

View full text Add to dashboard Cite

Nd 2 PdSi 3 single crystals were grown by a vertical floating zone method with radiation heating at a zone traveling rate of 3 mm/h. The compound exhibits congruent melting behavior at a liquidus temperature of about 1790 °C. The actual crystal composition (35.3 ± 0.5) at.% Nd, (16.2 ± 0.5) at.% Pd, and (48.5 ± 0.5) at.% Si is slightly depleted in Pd and Si with respect to the nominal stoichiometry. Therefore, the gradual accumulation of these elements in the traveling zone led to a decrease of the operating temperature during the growth process. Single crystalline samples exhibit a large anisotropy due to the crystal electric field effect and order ferromagnetically below the Curie temperature T C = 15.1 K. The [001] orientation was identified as the magnetic easy axis at low temperatures.

show abstract

Section: Methodsmentioning

confidence: 89%

Crystal growth of the intermetallic compound Nd₂PdSi₃

Löser

Tang

et al. 2011

Cryst. Res. Technol.

Self Cite

View full text Add to dashboard Cite

show abstract

“…Finally in recent years an increasing number of groups explores the use of opti-cal floating-zone furnaces for the growth of intermetallic compounds, see e.g. (Souptel et al, 2007). For example large single crystals have been grown of UNi 2 Al 3 (Mihalik et al, 1997) and of URu 2 Si 2 (see e.g.…”

Section: B Roadmap To Superconducting Phasesmentioning

confidence: 99%

Superconducting phases off-electron compounds

2009

View full text Add to dashboard Cite

Intermetallic compounds containing f-electron elements display a wealth of superconducting phases, that are prime candidates for unconventional pairing with complex order parameter symmetries. For instance, superconductivity has been found at the border of magnetic order as well as deep within ferro-and antiferromagnetically ordered states, suggesting that magnetism may promote rather than destroy superconductivity. Superconductivity near valence transitions, or in the vicinity of magneto-polar order are candidates for new superconductive pairing interactions such as fluctuations of the conduction electron density or the crystal electric field, respectively. The experimental status of the study of the superconducting phases of f-electron compounds is reviewed.

show abstract

“…Cylindrical samples (D=6 mm) of Ti-45.9Al-8Nb (at.%), grown in an optical floating zone furnace [75] at a withdrawal rate of 10 mm/h, were provided by IFW-Dresden. Discs of 4 mm thickness were cut by wire electrical discharge machining, ground to 1000 grit, polished with 3 µm diamond suspension, and finally electrolytically polished at -30°C/35 V in a solution of 6% perchloric acid in ethanol.…”

Section: Methodsmentioning

confidence: 99%

Plastic anisotropy of γ-TiAl revealed by axisymmetric indentation

Zambaldi¹,

Raabe²

2010

Acta Materialia

105

View full text Add to dashboard Cite

Single crystals of γ-TiAl cannot be grown in the near-stoichiometric compositions that are present inside two-phase γ/α 2 -microstructures with attractive mechanical properties. Therefore, the single crystal constitutive behavior of γ-TiAl was studied by nanoindentation experiments in single phase regions of these γ/α 2 -microstructures. The experiments were characterized by orientation microscopy and atomic force microscopy to quantify the orientation dependent mechanical response during nanoindentation. Further, they were analyzed by a 3D crystal plasticity finite element model that incorporated the deformation behavior of γ-TiAl. The spatially resolved activation of competing deformation mechanisms during indentation was used to assess their relative strengths. A convention was defined to unambiguously relate any indentation axis to a crystallographic orientation. Experiments and simulations were combined to study the orientation dependent surface pile-up. The characteristic pile-up topographies were simulated throughout the unit triangle of γ-TiAl and represented graphically in the newly introduced inverse pole figure of pile-up patterns. Through this approach, easy activation of ordinary dislocation glide in stoichiometric γ-TiAl was confirmed independently from dislocation observation by transmission electron microscopy.

show abstract

Vertical optical floating zone furnace: Principles of irradiation profile formation

Cited by 41 publications

References 23 publications

Crystal growth of the intermetallic compound Nd₂PdSi₃

Crystal growth of the intermetallic compound Nd₂PdSi₃

Superconducting phases off-electron compounds

Plastic anisotropy of γ-TiAl revealed by axisymmetric indentation

Contact Info

Product

Resources

About

Vertical optical floating zone furnace: Principles of irradiation profile formation

Cited by 41 publications

References 23 publications

Crystal growth of the intermetallic compound Nd2PdSi3

Crystal growth of the intermetallic compound Nd2PdSi3

Superconducting phases off-electron compounds

Plastic anisotropy of γ-TiAl revealed by axisymmetric indentation

Contact Info

Product

Resources

About

Crystal growth of the intermetallic compound Nd₂PdSi₃

Crystal growth of the intermetallic compound Nd₂PdSi₃