Samarium is a chemical element represented by the symbol "Sm" on the periodic table. It is named after the mineral samarskite, where it was first discovered.
Samarium is commonly used in various applications, such as magnets, electronic devices, and even cancer treatments.
Full definition
The T - Touch contains a tiny compass — a magnet
of samarium cobalt pivoting on bearings of synthetic ruby.
Although
samarium cobalt magnets (Sm2Co17 magnets), a type of rare earth permanent magnets, were developed in the early 1960's the underlying domain wall pinning mechanism has remained unknown.
Studies in Germany have reported critical local concentrations of the rare earth metals lanthanum and
samarium in the Rhine.
On 25 March, X.H. Chen of the University of Science and Technology of China in Hefei reported that
samarium oxygen fluorine iron arsenide (SmO1 - xFxFeAs) goes superconducting at 43 kelvin.
New findings from three teams may solve a 40 - year - old mystery regarding the odd electrical behavior of
samarium hexaboride, which may be a topological insulator in its bulk form
Between the planes lie elements such as lanthanum, cerium, or
samarium mixed with oxygen and fluorine.
Their method consists in inserting small amounts of
Samarium atoms at random places within the crystalline sub-lattice of the magnet's rare - earth component.
With further development, this knowledge can be applied to
produce samarium cobalt permanent magnets with improved magnetic performance.
In just six months the price of
samarium oxide quadrupled, to more than $ 50 a pound in May of this year, owing to its property as a permanent supermagnet when alloyed with cobalt.
In order to date the rocks obtained from near the eastern shore of the Hudson Bay in Northwestern Quebec, the researchers tracked the decay of an isotope
called samarium - 146.
The proposed magnet stems from the well -
known samarium and cobalt (SmCo5, CaCu5 - type structure) magnet, but goes a...
Oct. 9, 2017 - Lawrence Livermore National Laboratory researchers have developed a new, more efficient permanent magnet that removes the deficiencies of
conventional samarium and neodymium magnets.
Last year we also heard about the potential of
bismuth samarium ferrite (BSFO) as an alternative for lead in electronics, which could be first commercial replacement for the lead used in transducers, actuators, and sensors.
Scientists at TU Darmstadt explored on an atomic level how changes in iron content influence the micro-structure
of samarium - cobalt based permanent magnets.
In fact, the very same rock dated with different elements,
samarium and pota - ssium, have given results that vary by one billion years.
With that in mind, Adachi's group created an alloy from aluminum and
samarium, a rare - earth element having opposite spin and orbital moments that vary with temperature.
On 13 April, Zhao and his team showed that
the samarium compound becomes a superconductor at 55 kelvin if it is grown under pressure.
The team compared results from both rhenium - osmium and
samarium - neodymium radiometric dating of samples to arrive at estimates of when the minerals were locked inside of the diamonds.
Researchers collected rocks and measured minute isotopic variations in rare earth elements called neodymium and
samarium.
They observed a multi-fold increase in the magnet's stability over time with as little as 1 %
Samarium.
By implementing this state - of - the - art setup in combination with advanced simulation techniques the TU Darmstadt scientists envision to further investigate the mechanisms that lead to improved magnetic performances in
samarium - cobalt - based and related permanent magnets systems.
The authors believe this result is linked to
Samarium's symmetry.
Samarium's ability to stay strongly magnetic in extreme temperatures makes it a favorite of the military for use in precision - guided weapons.
In that year, Frenchman Eugène - Anatole Demarçay isolated the element as an impurity in samples of another rare earth,
samarium (named, indirectly, after Russian mine official V. E. Samarsky - Bykhovets).
Samarium is a chemical element with symbol Sm and atomic number 62.
Samarium is no longer offered at Harbor - UCLA, but a new study at the University of Missouri, headed by Dr. Carolyn Henry and funded by Morris Animal Foundation is underway.