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Growth of Self Organized Eutectic Fibers from LiF─Rare Earth Fluoride Systems

Published online by Cambridge University Press:  10 April 2013

Detlef Klimm ,
Maria F Acosta ,
Ivanildo A dos Santos ,
Izilda M Ranieri ,
Steffen Ganschow  and
Rosa I Merino
Detlef Klimm
Affiliation:
Leibniz Institute for Crystal Growth, Max-Born-Str. 2 12489 Berlin, Germany
Maria F Acosta
Affiliation:
Leibniz Institute for Crystal Growth, Max-Born-Str. 2 12489 Berlin, Germany Instituto de Ciencia de Materiales de Aragón (ICMA), Universidad de Zaragoza - CSIC, 50009 Zaragoza, Spain.
Ivanildo A dos Santos
Affiliation:
Leibniz Institute for Crystal Growth, Max-Born-Str. 2 12489 Berlin, Germany Instituto de Pesquisas Energéticas e Nucleares, CP 11049, Butantã 05422-970 São Paulo, SP, Brazil
Izilda M Ranieri
Affiliation:
Instituto de Pesquisas Energéticas e Nucleares, CP 11049, Butantã 05422-970 São Paulo, SP, Brazil
Steffen Ganschow
Affiliation:
Leibniz Institute for Crystal Growth, Max-Born-Str. 2 12489 Berlin, Germany
Rosa I Merino
Affiliation:
Instituto de Ciencia de Materiales de Aragón (ICMA), Universidad de Zaragoza - CSIC, 50009 Zaragoza, Spain.
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Abstract

Eutectic fibers consisting of an ordered arrangement of LiF fibrils inside a LiREF4 matrix (RE = Y, Gd) can be grown with the micro-pulling-down method at sufficiently large pulling rate exceeding 120 mm/h. The distance between individual fibrils could be scaled down to 1 µm at 300 mm/h pulling. LiF-LiYF4 has stronger tendency to form facetted eutectic colonies than LiF-LiGdF4, explained by the larger entropy of melting of the former.

Keywords

crystallinedirectional solidificationscanning electron microscopy (SEM)
Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 1508: Symposium BB – Recent Advances in Optical, Acoustic and Other Emerging Metamaterials , 2013 , mrsf12-1508-bb04-01
Copyright
Copyright © Materials Research Society 2013

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References

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