摘要
COPYRIGHT:By submitting a manuscript,the authors agree that the copyright for their article is transfer-red to the publisher if and when the article is accepted for publication.It is the author’s responsibility to ob-tain written permission to reproduce material which has appeared in another publication.SUBMISSION:Papers submitted to Journal of Rare Earths (English edition,quarterly published) shouldrepresent either original research or critical reviews not previously published in the field of rare earth scienceand technology.Contribution should be sent to the editors.All manuscripts should be submitted in triplicate,
