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Samarium
| My General Story  I was discovered spectroscopically by my sharp absorption lines in 1879 by Lecoq de Boisbaudran in the mineral samarskite, named in honor of a Russian mine official, Col Samarski. Little is known of my toxicity*; therefore, i should be handled very carefully. What is Toxicity? I form a compound with cobalt (SmCo5) which is a powerful permanent magnet with the highest resistance to demagnetization of any known material. | Inside My Nucleus  I have 62 protons, 62 electron, and 88 neutrons. What is a Proton? What is an Electron? What is a Neutron? Twenty one isotopes in me exist. My natural state is a mixture of several isotopes, three of which are unstable with long half-lives. Uses What is an Isotope? My Atomic Number is 62. | My Properties  I have a bright silver luster and is reasonably stable in air. My metal ignites in air at about 150oC. The sulfide in me has excellent high-temperature stability and good thermoelectric efficiencies up to 1100oC. I am a Stable Element. I am solid at room tempature. | |
| Where Can You Find Me? I am found along with other members of the rare-earth elements in many minerals, including monazite and bastnasite, which are commercial sources. My ion-exchange and solvent extraction techniques have recently simplified separation of the rare earths from one another; more recently, electrochemical deposition, using an electrolytic solution of lithium citrate and a mercury electrode, is said to be a simple, fast, and highly specific way to separate the rare earths. My metal can be produced by reducing the oxide with lanthanum. | CLICK HERE!  | My Compounds (My Friends!) Florides Chlorides Bromides Hydrides Oxides Sulfides Nitrides | |
| | My Uses Along with other rare earth metals, i am used for carbon-arc lighting for the motion picture industry. SmCo5 has been used in making a new permanent magnet material with the highest resistance to demagnetization* of any known material. My oxide has been used in optical glass to absorb the infrared. I have been used to dope calcium fluoride crystal for use in optical lasers or lasers. Compounds of my metal act as sensitizers* for phosphors excited in the infrared. It is used in infrared absorbing glass and as a neutron absorber in nuclear reactors. *Demagnetization *Sensitizers | More Uses I am used to make carbon arc lights which are used in the motion picture industry for studio lighting and projector lights. I also make up about 1% of Misch metal, a material that is used to make flints for lighters. My Price is roughly about 5$/g |
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Latest page update: made by JO$$$$$$$H
, Oct 20 2006, 2:12 PM EDT
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