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Article: Substrate effects on the ordering nanostructure for La2/3Ca1/3MnO3 ultrathin films

TitleSubstrate effects on the ordering nanostructure for La2/3Ca1/3MnO3 ultrathin films
Authors
KeywordsA1. Atomic force microscopy (AFM)
A1. Ordering nanostructure
A1. Surface microstructures
B1. La2/3Ca1/3MnO3 films
Ultrathin films
Issue Date2010
PublisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/jcrysgro
Citation
Journal of Crystal Growth, 2010, v. 312 n. 9, p. 1617-1621 How to Cite?
AbstractUltrathin La2/3Ca1/3MnO3 (LCMO) films grown on (0 0 1) SrTiO3 (STO), (0 0 1) yttrium stabilized ZrO2 (YSZ) and (0 0 1) LaAlO3 (LAO) single crystal substrates have been studied by means of synchrotron radiation and atomic force microscopy (AFM). LCMO films oriented along (0 0 l) (l=1,2,3) are formed on STO and LAO substrates compared to only (h h 0) (l=1,2) reflections that are present on YSZ substrate. Rocking curve studies reveal that the surface inhomogeneity appears in LCMO films grown on YSZ substrate. Ordered nanostructures are observed in the surface, which may be driven by the lattice strain induced by the lattice mismatch. With thickness increasing, films undergo dramatic surface evolution: starting with a relative flat surface separated by many pinholes and grooves, followed by improved crystallite quality but 2D-island morphology in LCMO/STO; from typical layer-by-layer growth to hatched morphology, which could be seen as the onset of 3D island structure in LCMO/LAO; in contrast, in the most mismatched LCMO/YSZ system, initially quasi-1D rod feature is dominant and ends with growing island-like structure in thicker films. The driving forces for morphology instabilities have been discussed by calculating the work of adhesion based on the first principle calculations. © 2010 Elsevier B.V. All rights reserved.
Persistent Identifierhttp://hdl.handle.net/10722/125281
ISSN
2015 Impact Factor: 1.462
2015 SCImago Journal Rankings: 0.752
ISI Accession Number ID
Funding AgencyGrant Number
NNSFC10774065
10523001
National Key Project on Basic Research of China (NKPBRC)2010CB923404
Funding Information:

This work was supported by NNSFC (nos. 10774065, 10523001) and the National Key Project on Basic Research of China (NKPBRC) (no. 2010CB923404).

 

DC FieldValueLanguage
dc.contributor.authorFu, Men_HK
dc.contributor.authorXie, QYen_HK
dc.contributor.authorGu, Men_HK
dc.contributor.authorZhang, Yen_HK
dc.contributor.authorWu, Xen_HK
dc.contributor.authorPan, Fen_HK
dc.contributor.authorChen, Xen_HK
dc.contributor.authorWu, Len_HK
dc.contributor.authorPan, Gen_HK
dc.contributor.authorGao, Jen_HK
dc.date.accessioned2010-10-31T11:21:57Z-
dc.date.available2010-10-31T11:21:57Z-
dc.date.issued2010en_HK
dc.identifier.citationJournal of Crystal Growth, 2010, v. 312 n. 9, p. 1617-1621en_HK
dc.identifier.issn0022-0248en_HK
dc.identifier.urihttp://hdl.handle.net/10722/125281-
dc.description.abstractUltrathin La2/3Ca1/3MnO3 (LCMO) films grown on (0 0 1) SrTiO3 (STO), (0 0 1) yttrium stabilized ZrO2 (YSZ) and (0 0 1) LaAlO3 (LAO) single crystal substrates have been studied by means of synchrotron radiation and atomic force microscopy (AFM). LCMO films oriented along (0 0 l) (l=1,2,3) are formed on STO and LAO substrates compared to only (h h 0) (l=1,2) reflections that are present on YSZ substrate. Rocking curve studies reveal that the surface inhomogeneity appears in LCMO films grown on YSZ substrate. Ordered nanostructures are observed in the surface, which may be driven by the lattice strain induced by the lattice mismatch. With thickness increasing, films undergo dramatic surface evolution: starting with a relative flat surface separated by many pinholes and grooves, followed by improved crystallite quality but 2D-island morphology in LCMO/STO; from typical layer-by-layer growth to hatched morphology, which could be seen as the onset of 3D island structure in LCMO/LAO; in contrast, in the most mismatched LCMO/YSZ system, initially quasi-1D rod feature is dominant and ends with growing island-like structure in thicker films. The driving forces for morphology instabilities have been discussed by calculating the work of adhesion based on the first principle calculations. © 2010 Elsevier B.V. All rights reserved.-
dc.languageengen_HK
dc.publisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/jcrysgroen_HK
dc.relation.ispartofJournal of Crystal Growthen_HK
dc.subjectA1. Atomic force microscopy (AFM)-
dc.subjectA1. Ordering nanostructure-
dc.subjectA1. Surface microstructures-
dc.subjectB1. La2/3Ca1/3MnO3 films-
dc.subjectUltrathin films-
dc.titleSubstrate effects on the ordering nanostructure for La2/3Ca1/3MnO3 ultrathin filmsen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0022-0248&volume=312&issue=9&spage=1617&epage=1621&date=2010&atitle=Substrate+effects+on+the+ordering+nanostructure+for+La2/3Ca1/3MnO3+ultrathin+filmsen_HK
dc.identifier.emailGao, J: jugao@hku.hken_HK
dc.identifier.authorityGao, J=rp00699en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1016/j.jcrysgro.2010.01.024-
dc.identifier.scopuseid_2-s2.0-77949918453-
dc.identifier.hkuros181516en_HK
dc.identifier.volume312en_HK
dc.identifier.issue9-
dc.identifier.spage1617en_HK
dc.identifier.epage1621en_HK
dc.identifier.isiWOS:000277530200025-

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