Growth of Free-Standing La2-xSrxCuO4 Nanoparticles

2019 ◽  
Vol 966 ◽  
pp. 357-362 ◽  
Author(s):  
Suci Winarsih ◽  
Faisal Budiman ◽  
Hirofumi Tanaka ◽  
Tadashi Adachi ◽  
Takayuki Goto ◽  
...  
Keyword(s):  
Heat Treatment ◽  
Size Effects ◽  
Lattice Parameters ◽  
Free Standing ◽  
Lattice Distortions ◽  
Superconducting Oxides ◽  
Size Of Particles

Nanosize effect on structure of crystal of free-standing La2-xSrxCuO4 (LSCO) nanoparticles was observed to reveal size effects of La-based high-Tc superconducting oxides. Lattice parameters were estimated by changing temperature and time of sintering. It is concluded that heat treatment plays a key role in controlling size of sample and lattice distortions occurred by reducing size of particles.

Surface and finite-size effects on N−Sm−A−Sm−C phase transitions in free-standing films

2020 ◽  
Vol 102 (2) ◽  
Author(s):  
E. J. L. de Oliveira ◽  
D. C. S. de Melo ◽  
Maria S. S. Pereira ◽  
L. R. Evangelista ◽  
I. N. de Oliveira
Keyword(s):  
Phase Transitions ◽  
Size Effects ◽  
Finite Size ◽  
Free Standing ◽  
Finite Size Effects

Hydrogen permeation of thin, free-standing Pd/Ag23% membranes before and after heat treatment in air

2008 ◽  
Vol 307 (1) ◽  
pp. 96-104 ◽  
Author(s):  
A.L. Mejdell ◽  
H. Klette ◽  
A. Ramachandran ◽  
A. Borg ◽  
R. Bredesen
Keyword(s):  
Heat Treatment ◽  
Hydrogen Permeation ◽  
Free Standing ◽  
Before And After

Lattice Parameters and Local Lattice Distortions in fcc-Ni Solutions

2007 ◽  
Vol 38 (3) ◽  
pp. 562-569 ◽  
Author(s):  
Tao Wang ◽  
Long-Qing Chen ◽  
Zi-Kui Liu
Keyword(s):  
Lattice Parameters ◽  
Local Lattice ◽  
Lattice Distortions

OS1809 Influence of heat treatment on mechanical properties of a free-standing cold sprayed SUS316

2011 ◽  
Vol 2011 (0) ◽  
pp. _OS1809-1_-_OS1809-3_
Author(s):  
Yasuhiro YAMAZAKI ◽  
Junpei TAMURA ◽  
Hirotaka FUKANUMA ◽  
Naoyuki OHNO
Keyword(s):  
Mechanical Properties ◽  
Heat Treatment ◽  
Free Standing

The effect of lattice distortions on the X-ray measurement of lattice parameters for PdHx. I. Empirical relationships

1987 ◽  
Vol 17 (10) ◽  
pp. 2041-2048 ◽  
Author(s):  
I S Balbaa ◽  
P A Hardy ◽  
A San-Martin ◽  
P G Coulter ◽  
F D Machester
Keyword(s):  
Lattice Parameters ◽  
Empirical Relationships ◽  
X Ray ◽  
Lattice Distortions

Structural and Mechanical Characterizations of Ni-Mn-Ga Thin Films Deposited by R.F. Sputtering and Heat-Treated

2008 ◽  
Vol 583 ◽  
pp. 213-228 ◽  
Author(s):  
Florent Bernard ◽  
Patrick Delobelle ◽  
Laurent Hirsinger ◽  
Christophe Rousselot
Keyword(s):  
Magnetic Field ◽  
Crystal Structure ◽  
Thin Films ◽  
Heat Treatment ◽  
Internal Stress ◽  
Smart Materials ◽  
Annealing Treatment ◽  
Crystallographic Structure ◽  
Indentation Modulus ◽  
Free Standing

The near-stoichiometric Ni2MnGa ferromagnetic alloys are one of these smart materials, that show a great interest when they are deposited as a thin film by rf sputtering. These thin films of shape memory alloys (SMAs) are prospective materials for micro and nanosystem applications. However, the properties of the SMAs polycrystalline thin films depend strongly on their structure and internal stress, which develop during the sputtering process and also during the post-deposition annealing treatment. In this study, 1μm Ni55Mn23Ga22 thin films were deposited at 0.45 and 1 Pa of Ar and their composition, crystallographic structure, internal stress, indentation modulus, hardness and deflection induced by magnetic field were systematically studied as a function of the temperature of the silicon substrate ranging from 298 to 873 K and the vacuum annealing treatment at 873 K for 21 and 36 ks. A silicon wafer having a native amorphous thin SiOx buffer layer was used as a substrate. This substrate influences the microstructure and blocks the diffusion process during the heat treatment. The crystal structure of the martensitic phase in each film was changed systematically from bct or 10M or 14M. In addition, the evolution of the mechanical properties such as means stress, roughness, hardness and indentation modulus with the temperature (of substrate or of heat treatment) were measured and correlated to crystal structure and morphology changes. It is concluded that the response of a free-standing magnetic SMAs films to a magnetic field of 200 kA/m depends strongly on the martensitic structure, internal mechanical stress (mean and gradient) and magnetic properties. The free-standing annealed film at 873 K for 36 ks demonstrates a considerable magnetic actuation associated with bct or 10M or 14M martensitic structures.

Effects of Heat Treatment on Crystal Structure and Reactivity of Sericite

2010 ◽  
Vol 178 ◽  
pp. 113-117
Author(s):  
Xia Xu ◽  
Hao Ding ◽  
Ning Liang ◽  
Yue Bo Wang ◽  
Wei Yan
Keyword(s):  
Crystal Structure ◽  
Heat Treatment ◽  
Ion Exchange ◽  
Sem Images ◽  
Lattice Distortions

To activate the reactivity of sericite and make it have the abilities of ion exchange and intercalation between layers, the effects of heat treatment on crystal structure and reactivity of sericite were studied. The results, analyzed by XRD and Hall formula, indicate that sericite still retains its crystal characteristics after being activated by heat treatment at 500°C-800°C, but there are significant lattice distortions, and the maximum one occurred at 800°C. It can be seen from the SEM images that heat treatment reduces the order of sheets of sericite and makes the surfaces rough and the edges and corners smooth. The Al3+ dissolution amount from the sericite in HNO3 is 24.34 mg/g after heat treatment, which is increased significantly compared with the untreated one. It demonstrates that the reactivity of sericite is improved remarkably.

Fabrication of monodispersed Au@Ag bimetallic nanorod-loaded nanofibrous membrane with fast thermo-responsiveness and its use as a smart free-standing SERS substrate

RSC Advances ◽  
2016 ◽  
Vol 6 (54) ◽  
pp. 48479-48488 ◽  
Author(s):  
Siyuan Chen ◽  
Liying Wang ◽  
Xu Dong ◽  
Xiaoyun Liu ◽  
Jianfeng Zhou ◽  
...  
Keyword(s):  
Heat Treatment ◽  
Subsequent Heat Treatment ◽  
Nanofibrous Membrane ◽  
Core Shell ◽  
Sers Substrate ◽  
Free Standing ◽  
Bimetallic Nanorods

Monodispersed core–shell structured Au@Ag bimetallic nanorods-loaded nanofibrous membrane with fast thermo-responsiveness was fabricated by electrospinning and subsequent heat treatment, which can be used as a smart free-standing SERS substrate.

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