Anisotropic imprint of amorphization and phase separation in manganite thin films via laser interference irradiation

Handle URI:
http://hdl.handle.net/10754/563760
Title:
Anisotropic imprint of amorphization and phase separation in manganite thin films via laser interference irradiation
Authors:
Ding, Junfeng; Lin, Zhipeng; Wu, Jianchun; Dong, Zhili; Wu, Tao ( 0000-0003-0845-4827 )
Abstract:
Materials with mesoscopic structural and electronic phase separation, either inherent from synthesis or created via external means, are known to exhibit functionalities absent in the homogeneous counterparts. One of the most notable examples is the colossal magnetoresistance discovered in mixed-valence manganites, where the coexistence of nano-to micrometer-sized phase-separated domains dictates the magnetotransport. However, it remains challenging to pattern and process such materials into predesigned structures and devices. In this work, a direct laser interference irradiation (LII) method is employed to produce periodic stripes in thin films of a prototypical phase-separated manganite Pr0.65(Ca0.75Sr0.25)0.35MnO3 (PCSMO). LII induces selective structural amorphization within the crystalline PCSMO matrix, forming arrays with dimensions commensurate with the laser wavelength. Furthermore, because the length scale of LII modification is compatible to that of phase separation in PCSMO, three orders of magnitude of increase in magnetoresistance and significant in-plane transport anisotropy are observed in treated PCSMO thin films. Our results show that LII is a rapid, cost-effective and contamination-free technique to tailor and improve the physical properties of manganite thin films, and it is promising to be generalized to other functional materials.
KAUST Department:
Physical Sciences and Engineering (PSE) Division; Materials Science and Engineering Program; Solar and Photovoltaic Engineering Research Center (SPERC); Laboratory of Nano Oxides for Sustainable Energy
Publisher:
Wiley-Blackwell
Journal:
Small
Issue Date:
16-Sep-2014
DOI:
10.1002/smll.201400555
Type:
Article
ISSN:
16136810
Sponsors:
This work is supported in part by the King Abdullah University of Science and Technology (KAUST).
Appears in Collections:
Articles; Physical Sciences and Engineering (PSE) Division; Materials Science and Engineering Program; Solar and Photovoltaic Engineering Research Center (SPERC)

Full metadata record

DC FieldValue Language
dc.contributor.authorDing, Junfengen
dc.contributor.authorLin, Zhipengen
dc.contributor.authorWu, Jianchunen
dc.contributor.authorDong, Zhilien
dc.contributor.authorWu, Taoen
dc.date.accessioned2015-08-03T12:09:12Zen
dc.date.available2015-08-03T12:09:12Zen
dc.date.issued2014-09-16en
dc.identifier.issn16136810en
dc.identifier.doi10.1002/smll.201400555en
dc.identifier.urihttp://hdl.handle.net/10754/563760en
dc.description.abstractMaterials with mesoscopic structural and electronic phase separation, either inherent from synthesis or created via external means, are known to exhibit functionalities absent in the homogeneous counterparts. One of the most notable examples is the colossal magnetoresistance discovered in mixed-valence manganites, where the coexistence of nano-to micrometer-sized phase-separated domains dictates the magnetotransport. However, it remains challenging to pattern and process such materials into predesigned structures and devices. In this work, a direct laser interference irradiation (LII) method is employed to produce periodic stripes in thin films of a prototypical phase-separated manganite Pr0.65(Ca0.75Sr0.25)0.35MnO3 (PCSMO). LII induces selective structural amorphization within the crystalline PCSMO matrix, forming arrays with dimensions commensurate with the laser wavelength. Furthermore, because the length scale of LII modification is compatible to that of phase separation in PCSMO, three orders of magnitude of increase in magnetoresistance and significant in-plane transport anisotropy are observed in treated PCSMO thin films. Our results show that LII is a rapid, cost-effective and contamination-free technique to tailor and improve the physical properties of manganite thin films, and it is promising to be generalized to other functional materials.en
dc.description.sponsorshipThis work is supported in part by the King Abdullah University of Science and Technology (KAUST).en
dc.publisherWiley-Blackwellen
dc.titleAnisotropic imprint of amorphization and phase separation in manganite thin films via laser interference irradiationen
dc.typeArticleen
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Divisionen
dc.contributor.departmentMaterials Science and Engineering Programen
dc.contributor.departmentSolar and Photovoltaic Engineering Research Center (SPERC)en
dc.contributor.departmentLaboratory of Nano Oxides for Sustainable Energyen
dc.identifier.journalSmallen
dc.contributor.institutionSchool of Materials Science and Engineering, Nanyang Technological UniversitySingapore, Singaporeen
dc.contributor.institutionKey Laboratory of Radiation Physics and Technology Ministry of Education, Institute of Nuclear Science and Technology, Sichuan UniversityChengdu, Chinaen
kaust.authorDing, Junfengen
kaust.authorWu, Taoen
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