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dc.contributor.authorDing, Junfeng
dc.contributor.authorLin, Zhipeng
dc.contributor.authorWu, Jianchun
dc.contributor.authorDong, Zhili
dc.contributor.authorWu, Tao
dc.date.accessioned2015-08-03T12:09:12Z
dc.date.available2015-08-03T12:09:12Z
dc.date.issued2014-09-16
dc.identifier.issn16136810
dc.identifier.pmid25227572
dc.identifier.doi10.1002/smll.201400555
dc.identifier.urihttp://hdl.handle.net/10754/563760
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.
dc.description.sponsorshipThis work is supported in part by the King Abdullah University of Science and Technology (KAUST).
dc.publisherWiley
dc.titleAnisotropic imprint of amorphization and phase separation in manganite thin films via laser interference irradiation
dc.typeArticle
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Division
dc.contributor.departmentMaterials Science and Engineering Program
dc.contributor.departmentKAUST Solar Center (KSC)
dc.contributor.departmentLaboratory of Nano Oxides for Sustainable Energy
dc.identifier.journalSmall
dc.contributor.institutionSchool of Materials Science and Engineering, Nanyang Technological UniversitySingapore, Singapore
dc.contributor.institutionKey Laboratory of Radiation Physics and Technology Ministry of Education, Institute of Nuclear Science and Technology, Sichuan UniversityChengdu, China
kaust.personDing, Junfeng
kaust.personWu, Tao
dc.date.published-online2014-09-16
dc.date.published-print2015-02


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