Structural phase diagram for superconducting cuprates solid state processing for enhanced flux pinning

1992 ◽  
Vol 194 (1-2) ◽  
pp. 150-152 ◽  
Author(s):  
J.L. Tallon ◽  
D.M. Pooke ◽  
R.G. Buckley ◽  
M.R. Presland ◽  
A. Mawdsley ◽  
...  
Keyword(s):  
Phase Diagram ◽  
Solid State ◽  
Flux Pinning ◽  
Structural Phase ◽  
Superconducting Cuprates ◽  
State Processing

Preliminary Investigation of Processing and Phase Diagram Construction in the Y‐Sr‐Cu‐O System

1989 ◽  
Vol 169 ◽  
Author(s):  
T. D. Rolin ◽  
F. S. Cheng ◽  
J. R. Ashburn ◽  
H. Y. Cheng ◽  
E. E. Anderson
Keyword(s):  
Phase Diagram ◽  
Solid State ◽  
Ternary Phase ◽  
Single Phase ◽  
Ternary Phase Diagram ◽  
Preliminary Investigation ◽  
Processing Technique ◽  
Advantages And Disadvantages ◽  
Using Data ◽  
State Processing

AbstractWe have investigated the Y‐Sr‐Cu‐O system which has been reported to form a K2NiF4‐type superconducting phase (TC∼40K) and a “123”‐type phase (Tc‐80K). Difficulties in preparing single phase materials by standard solid state reaction of carbonates and oxides have compelled us to explore other methods. A two‐stage solid state processing technique in addition to a coprecipitation method will be discussed along with the relative advantages and disadvantages of each. Using data obtained from XRD and EDS, we have mapped some of the YO1.5‐SrO‐CuO ternary phase diagram in anticipation of continued efforts at single crystal growth.

scholarly journals Understanding solid-state processing of pharmaceutical cocrystals via milling: Role of tablet excipients

2021 ◽  
Vol 601 ◽  
pp. 120514 ◽  
Author(s):  
Rahamatullah Shaikh ◽  
Saeed Shirazian ◽  
Sarah Guerin ◽  
Eoin Sheehan ◽  
Damien Thompson ◽  
...  
Keyword(s):  
Solid State ◽  
Pharmaceutical Cocrystals ◽  
Tablet Excipients ◽  
State Processing

Interfacial Microstructure Evolution Between Eutectic SnAgCu Solder and Al/Ni(V)/Cu Thin Films

2002 ◽  
Vol 17 (7) ◽  
pp. 1612-1621 ◽  
Author(s):  
M. Li ◽  
F. Zhang ◽  
W. T. Chen ◽  
K. Zeng ◽  
K. N. Tu ◽  
...  
Keyword(s):  
Thin Films ◽  
Phase Diagram ◽  
Solid State ◽  
Brittle Failure ◽  
Ternary Phase ◽  
Interfacial Microstructure ◽  
Snagcu Solder ◽  
Ball Shear ◽  
Aging Study ◽  
Eutectic Snpb

The evolution of interfacial microstructure of eutectic SnAgCu and SnPb solders on Al/Ni(V)/Cu thin films was investigated after various heat treatments. In the eutectic SnPb system, the Ni(V) layer was well protected after 20 reflow cycles at 220 °C. In the SnAgCu solder system, after 5 reflow cycles at 260 °C, the (Cu,Ni)6Sn5 ternary phase formed and Sn was detected in the Ni(V) layer. After 20 reflow cycles, the Ni(V) layer disappeared and spalling of the (Cu,Ni)6Sn5 was observed, which explains the transition to brittle failure mode after ball shear testing. The different interfacial reactions that occurred in the molten SnAgCu and SnPb systems were explained in terms of different solubilities of Cu in the two systems. The dissolution and formation of the (Cu,Ni)6Sn5phase were discussed on the basis of a Sn–Ni–Cu phase diagram. In the solid-state aging study of the SnAgCu samples annealed at 150 °C for up to 1000 h, the Ni(V) layer was intact and the intermetallic compound formed was Cu6Sn5 and not (Cu,Ni)6Sn5, which is the same as was observed for the eutectic SnPb system.

Mechanical Characterization of Ceramic Nano B4C- Al2618 Alloy Composites Synthesized by Semi Solid State Processing

2018 ◽  
Vol 77 (3) ◽  
pp. 146-149 ◽  
Author(s):  
Madeva Nagaral ◽  
Shivananda Kalgudi ◽  
Virupaxi Auradi ◽  
Shivaputrappa Amarappa Kori
Keyword(s):  
Solid State ◽  
Mechanical Characterization ◽  
Semi Solid ◽  
State Processing

scholarly journals Phase diagram of solid hints new fundamental constant and sees atomic orbital

2021 ◽  
Author(s):  
Shapiullah Belalovich Abdulvagidov
Keyword(s):  
Phase Diagram ◽  
Solid State ◽  
Triple Point ◽  
Transition Metal Oxides ◽  
Atomic Orbital ◽  
Fundamental Constant ◽  
Molecular Volume ◽  
Zero Field ◽  
Covalent Bonds ◽  
State Tomography

Abstract Cold and pressure transform gas into liquid and then into solid. Van der Waals understood the phase diagram of liquefiable gas with the molecular volume and intermolecular attraction, however, was silent on how solid behaved1. Unfortunately, solid-state phase diagram have remained uncomprehended mystery; only its straight boundary2,3 was explained by struggle of order vs. chaos. Here we show that the volume of orbital overlap has its own energy, with the universal density 8.941 eV/Å3 announced as new fundamental atomic constant that determines the transition temperature TC. Furthermore, we devised solid-state tomography, valid to 5 TPa, - imaging orbital through the baric dependencies of TC. Triangle-shaped pattern of the diagram is explained by the only possible way, just as only one plane passes through triangle: -inflation of the intersection volume during the transition determines hysteresis, but its disappearance does triple point; -approaching ions, whose orbitals overlap, curves the line from zero-field-cooling (ZFC) TC to triple point; -the straight line between zero-field-heating (ZFH) TC and triple point is a consequence of straightening tilting angle. Diamond melting point, calculated from volumes of the tetrahedral covalent bonds, excellently agrees with real; furthermore, the points up to 2 TPa agree with experiment4. Our findings open up way to interpret antiferromagnetism and steric effect in mono, binary, and ternary transition-metal oxides and sulfides5-11, and advance in unravelling unconventional superconductivity12,13, ascertaining the roles of s- and p-hybridizations. Thereby, the importance of the solid-state tomography for organic conductors12,13 being high-compressible and interior of stars can scarcely be exaggerated.

A furnace for in situ synchrotron Laue diffraction and its application to studies of solid-state phase transformations

1990 ◽  
Vol 23 (6) ◽  
pp. 545-549 ◽  
Author(s):  
H. L. Bhat ◽  
S. M. Clark ◽  
A. El Korashy ◽  
K. J. Roberts
Keyword(s):  
Experimental Data ◽  
Thermal Stability ◽  
Phase Transitions ◽  
Solid State ◽  
Synchrotron Radiation ◽  
Structural Phase ◽  
Structural Phase Transitions ◽  
Laue Diffraction ◽  
Thermal Stability Of

The design of a new microfurnace for use for Laue diffraction studies of solid-state transformations is described. The furnace operates in the temperature range 298–573 K with a thermal stability of about ± 0.1 K. The potential of the synchrotron-radiation Laue diffraction technique for studies of structural phase transitions is demonstrated. Experimental data on phase transitions in caesium periodate, potassium tetrachlorozincate and pentaerythritol are presented.

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