The development of iron-based superconducting material that we can be prepared with little or no rare earth cheap.

It has developed a superconducting iron-based material that can be manufactured at low cost with little or no (rare earth) Rare Earth, 22, group (condensed matter physics) Professor of the Graduate School of Okayama field was announced.
Temperature is also a transition to a superconducting state at which the resistance becomes zero, succeeded in raising 45 degrees absolute temperature which is a world record until (degree 228 below zero), the material of the same type practical in terms of both temperature and the "price group I have a "lead to.
Conventional iron-based superconducting material, was used as the main component, such as expensive rare earth samarium. Calcium and iron is the main component, the newly developed material of rare earth lanthanum only about 4% are not included. I want to establish a technology that does not rely on the presence of mud resources, including rare earths have been treated largely from Japanese waters. I want to aim to commercialize been studying further.


レアアース（希土類）をほとんど使わずに安価で製造できる鉄系の超電導物質を開発したと、岡山大大学院の野原教授（物性物理学）のグループが２２日、発表した。
　電気抵抗がゼロになる超電導状態へ移行する温度も、同タイプの物質では世界最高記録となる絶対温度４５度（零下２２８度）まで引き上げることに成功、グループは「価格と温度の両面で実用化につながる」としている。
　従来の鉄系超電導物質は、サマリウムなど高価なレアアースを主成分として使っていた。今回開発した物質はカルシウムと鉄が主成分で、レアアースのランタンは４％程度しか含まれない。日本近海からレアアースを含む泥の存在が大きく扱われていますが資源に頼ることのない技術を確立してほしいですね。更なる研究を重ねて実用化を目指して欲しいですね。