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• n  a white soft metallic element that tarnishes readily; occurs in rare earth minerals and is usually classified as a rare earth

• Now Chu's team tried lanthanum, the rare-earth component of the IBM compound.
• They have tongue-twisting names (praseodymium, gadolinium, cerium, lanthanum, ytterbium, etc.
• It is compounded of three rare metals: tantalum, tungsten, lanthanum.

• La
• atomic number 57

News & Articles

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• Scientists solve riddle of strangely behaving magnetic material
  Materials scientists have found an accurate way to explain the magnetic properties of a lanthanum-cobalt-oxygen compound that has mystified the scientific community for decades.
  June 21, 2013 - Science Daily
• Ames Laboratory scientists solve riddle of strangely behaving magnetic material
  ( DOE/Ames Laboratory ) Materials scientists at the US Department of Energy's Ames Laboratory have found an accurate way to explain the magnetic properties of a lanthanum-cobalt-oxygen compound that has mystified the scientific community for decades.
  June 21, 2013 - EurekAlert!