Results 11 to 20 of about 52,239 (140)

TbCu7-type Sm-X-Fe compounds (X = Zr, Hf, Y, Dy, La, Ce and Nd) synthesized by low-temperature reduction-diffusion (LTRD) process using molten salt

AIP Advances, 2022
TbCu7-type Sm-Fe-N anisotropic powder with a high Fe content has the potential to surpass the Nd-Fe-B magnet. In this study, elemental substitution of Sm in a Sm-Fe system was investigated for the purpose of synthesizing Fe-rich TbCu7-type Sm-Fe ...
Jungryang Kim, Shusuke Okada, Kenta Takagi   +2 more
doaj   +1 more source

Provenance of fine-grained sedimentary rocks derived from Rb-Sr and Sm-Nd analyses: the example of the Santa Maria Formation (Triassic, Parana Basin, Southern Brazil)

Latin American Journal of Sedimentology and Basin Analysis, 2021
In this work, the Rb-Sr and Sm-Nd methods were applied to fine-grained sedimentary rock samples of the Santa Maria Formation (Triassic, Paraná Basin) in order to have provenance information.
Diogo Rodrigues Andrade Da Silva, Ana Maria Pimentel Mizusaki, Sylvia Maria Couto Dos Anjos, Edinei Koester, André Weissheimer De Borba   +4 more
doaj   +2 more sources

On the age of pyrochlore carbonatites from the Ilmeno-Vishnevogorsky Alkaline Complex, the Southern Urals (insights from Rb-Sr and Sm-Nd isotopic data)

Литосфера, 2020
Research subject. In this research, we carried out Sm-Nd- и Rb-Sr-dating of pyrochlore carbonatite from the Vishnevogorsky niobium deposit, Ilmeno-Vishnevogorsky Alkaline Complex, Southern Urals.
I. L. Nedosekova, V. A. Koroteev, T. B. Bayanova, P. A. Serov, V. I. Popova, M. V. Chervyakovskaya   +5 more
doaj   +1 more source

Sm-Nd age of the fazenda brasileiro gabbro, Bahia, Brazil: example of robust behavior of the Sm-Nd isotopic system under extreme hydrothermal alteration

Anais da Academia Brasileira de Ciências, 2003
The Fazenda Brasileiro gold mineralization is hosted by a gabbroic sill, intrusive into metavolcanicmetasedimentary rocks of the Rio Itapicuru Greenstone Belt, São Francisco Craton.
Márcio M. Pimentel, Maria da Glória Silva   +1 more
doaj   +1 more source

Simultaneous in situ determination of U‐Pb and Sm‐Nd isotopes in monazite by laser ablation ICP‐MS

Geochemistry, Geophysics, Geosystems, 2014
Results are presented for in situ simultaneous determination of U‐Pb and Sm‐Nd isotopes in monazite using the Laser Ablation Split‐Stream (LASS) method. This method uses a laser ablation system coupled to a magnetic‐sector inductively coupled plasma mass
Dylan J. Goudie, Christopher M. Fisher, John M. Hanchar, James L. Crowley, John C. Ayers   +4 more
doaj   +1 more source

Recent progress in the development of high-performance bonded magnets using rare earth–Fe compounds

Science and Technology of Advanced Materials, 2021
Permanent magnets, and particularly rare earth magnets such as Nd-Fe-B, have attracted much attention because of their magnetic properties. There are two well-established techniques for obtaining sintered magnets and bonded Nd-Fe-B magnets.
Takashi Horikawa, Masao Yamazaki, Masashi Matsuura, Satoshi Sugimoto ‎   +3 more
doaj   +1 more source

Super-chondritic Sm/Nd ratios in Mars, the Earth and the Moon

Nature, 2008
Small isotopic differences in the atomic abundance of neodymium-142 (142Nd) in silicate rocks represent the time-averaged effect of decay of formerly live samarium-146 (146Sm) and provide constraints on the timescales and mechanisms by which planetary mantles first differentiated.
Caro, G., Bourdon, B., Halliday, A. N., Quitté, Ghylaine   +3 more
openaire   +4 more sources

The age of the ferropicritic volcanics and comagmatic Ni-bearing intrusions at Pechenga, Kola Peninsula, U.S.S.R. [PDF]

Bulletin of the Geological Society of Finland, 1990
Sm-Nd, Pb-Pb and U-Pb isotopic results are presented for samples from the Pilgujärvi Suite of the Pechenga Series. Whole rock samples and clinopyroxenes of ferropicritic volcanics yield a Sm-Nd isochron age of 1990 ± 66 Ma with εNd + 1.6 ± 0.4.
E. Hanski, H. Huhma, V.F. Smolkin, M. Vaasjoki   +3 more
doaj   +1 more source

The Influence of Nd and Sm on the Structure and Properties of Sol-Gel-Derived TiO₂ Powders

Molecules, 2021
TiO2 nanopowders modified by Nd and Sm were prepared using the sol-gel technique. It was found by XRD analysis that the samples containing Sm are amorphous up to 300 °C, while those with Nd preserve a mixed organic-inorganic amorphous structure at higher
Albena Bachvarova-Nedelcheva, Stancho Yordanov, Reni Iordanova, Irina Stambolova, Angelina Stoyanova, Nelly Georgieva, Veronica Nemska   +6 more
doaj   +1 more source

Double-beta decay of $$^{150}\hbox {Nd}$$ 150 Nd to excited levels of $$^{150}\hbox {Sm}$$ 150 Sm

European Physical Journal C: Particles and Fields
The $$2\nu 2\beta $$ 2 ν 2 β decay of $$^{150}\hbox {Nd}$$ 150 Nd to the first excited 740.5 keV $$0^{+}_{1}$$ 0 1 + level of $$^{150}\hbox {Sm}$$ 150 Sm was measured over 5.845 years with the help of a four-crystal low-background HPGe $$\gamma $$ γ ...
A. S. Barabash, P. Belli, R. Bernabei, R. S. Boiko, F. Cappella, V. Caracciolo, R. Cerulli, F. A. Danevich, D. L. Fang, F. Ferella, A. Incicchitti, V. V. Kobychev, S. I. Konovalov, M. Laubenstein, A. Leoncini, V. Merlo, S. Nisi, O. Niţescu, D. V. Poda, O. G. Polischuk, I. B.-K. Shcherbakov, F. Šimkovic, A. Timonina, V. S. Tinkova, V. I. Tretyak, V. I. Umatov   +25 more
doaj   +1 more source