Location of the Yttrium Atom in Y@C82and Its Influence on the Reactivity of Cage Carbons

2009 ◽  
Vol 131 (34) ◽  
pp. 12066-12067 ◽  
Author(s):  
Xing Lu ◽  
Hidefumi Nikawa ◽  
Lai Feng ◽  
Takahiro Tsuchiya ◽  
Yutaka Maeda ◽  
...  
Keyword(s):  
Yttrium Atom

Effective excitation cross sections of transitions of the yttrium atom

1984 ◽  
Vol 40 (4) ◽  
pp. 368-371 ◽  
Author(s):  
A. N. Kuchenev ◽  
Yu. M. Smirnov
Keyword(s):  
Cross Sections ◽  
Yttrium Atom ◽  
Excitation Cross Sections ◽  
Effective Excitation

Excitation of doublet states of yttrium atom by electron impact

2000 ◽  
Vol 38 (2) ◽  
pp. 163-169
Author(s):  
Yu. M. Smirnov
Keyword(s):  
Electron Impact ◽  
Yttrium Atom

A 92.5 K REBa2Cu3O7-δ SUPERCONDUCTOR STARTING FROM NATURAL MIXTURE OF RARE EARTH ELEMENTS

1999 ◽  
Vol 13 (14) ◽  
pp. 485-490 ◽  
Author(s):  
P. RODRIGUES ◽  
A. R. JURELO ◽  
J. FLEMMING
Keyword(s):  
Rare Earth ◽  
Rare Earth Elements ◽  
Lattice Parameters ◽  
Superconducting Properties ◽  
X Ray Diffraction ◽  
Yttrium Atom ◽  
X Ray ◽  
Natural Mixture ◽  
Average Lattice

The processing and characterization of a REBa 2 Cu 3 O 7-δ, sample superconductor is described, where RE corresponds to a natural mixture of rare earth elements extracted from xenotime mineral. This mixture contains no Pr and, contrary to previous studies, can substitute the yttrium atom in YBa 2 Cu 3 O 7-δ, (YBCO) without deleterious effects in structural and superconducting properties, as measured by X-ray diffraction, resistivity and magnetoresistivity. Our sample presented T c =92.5 K and average lattice parameters a=3.821 Å, b=3.896 Å and c=11.686 Å, which are very similar to YBCO properties. Considering that the process of separation of Y (and other pure rare earth elements) from any natural mixture involves high costs, our system represents a practical alternative to YBCO compound.

Ground state geometries and stability of impurity doped clusters: LinY (n= 9–13). The role of yttrium atom in electronic and magnetic properties

2021 ◽  
pp. 138884
Author(s):  
Juan Pablo Mojica-Sánchez ◽  
Roberto Flores-Moreno ◽  
Kayim Pineda-Urbina ◽  
Gabino González-Carrillo ◽  
Henry Nicole González-Ramírez ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Ground State ◽  
Yttrium Atom ◽  
Electronic And Magnetic Properties ◽  
Impurity Doped ◽  
Doped Clusters

scholarly journals Local electronic structure rearrangements and strong anharmonicity in YH3 under pressures up to 180 GPa

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
J. Purans ◽  
A. P. Menushenkov ◽  
S. P. Besedin ◽  
A. A. Ivanov ◽  
V. S. Minkov ◽  
...  
Keyword(s):  
High Pressure ◽  
Heavy Atom ◽  
Atomic Scale ◽  
Temperature Threshold ◽  
Yttrium Atom ◽  
Hydrogen Interaction ◽  
Local Electronic Structure ◽  
X Ray Absorption ◽  
Double Well Potential ◽  
Strong Anharmonicity

AbstractThe discovery of superconductivity above 250 K at high pressure in LaH10 and the prediction of overcoming the room temperature threshold for superconductivity in YH10 urge for a better understanding of hydrogen interaction mechanisms with the heavy atom sublattice in metal hydrides under high pressure at the atomic scale. Here we use locally sensitive X-ray absorption fine structure spectroscopy (XAFS) to get insight into the nature of phase transitions and the rearrangements of local electronic and crystal structure in archetypal metal hydride YH3 under pressure up to 180 GPa. The combination of the experimental methods allowed us to implement a multiscale length study of YH3: XAFS (short-range), Raman scattering (medium-range) and XRD (long-range). XANES data evidence a strong effect of hydrogen on the density of 4d yttrium states that increases with pressure and EXAFS data evidence a strong anharmonicity, manifested as yttrium atom vibrations in a double-well potential.

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