Please use this identifier to cite or link to this item:
http://hdl.handle.net/10397/4871
DC Field | Value | Language |
---|---|---|
dc.contributor | Department of Applied Physics | - |
dc.contributor | Materials Research Centre | - |
dc.creator | Zheng, RK | - |
dc.creator | Habermeier, H | - |
dc.creator | Chan, HLW | - |
dc.creator | Choy, CL | - |
dc.creator | Luo, HS | - |
dc.date.accessioned | 2014-12-11T08:22:43Z | - |
dc.date.available | 2014-12-11T08:22:43Z | - |
dc.identifier.issn | 1098-0121 | - |
dc.identifier.uri | http://hdl.handle.net/10397/4871 | - |
dc.language.iso | en | en_US |
dc.publisher | American Physical Society | en_US |
dc.rights | Physical Review B © 2010 The American Physical Society. The Journal's web site is located at http://prb.aps.org/ | en_US |
dc.subject | Calcium compounds | en_US |
dc.subject | Jahn-Teller effect | en_US |
dc.subject | Lanthanum compounds | en_US |
dc.subject | Lead compounds | en_US |
dc.subject | Magnesium compounds | en_US |
dc.subject | Magnetoresistance | en_US |
dc.subject | Metal-insulator boundaries | en_US |
dc.subject | Niobium compounds | en_US |
dc.subject | Piezoelectricity | en_US |
dc.subject | Thin films | en_US |
dc.title | Effects of substrate-induced strain on transport properties of LaMnO[sub 3+δ] and CaMnO₃ thin films using ferroelectric poling and converse piezoelectric effect | en_US |
dc.type | Journal/Magazine Article | en_US |
dc.description.otherinformation | Author name used in this publication: H. L. W. Chan | en_US |
dc.description.otherinformation | Author name used in this publication: C. L. Choy | en_US |
dc.identifier.spage | 1 | - |
dc.identifier.epage | 9 | - |
dc.identifier.volume | 81 | - |
dc.identifier.issue | 10 | - |
dc.identifier.doi | 10.1103/PhysRevB.81.104427 | - |
dcterms.abstract | We have investigated the effects of the strain induced by ferroelectric poling (or the converse piezoelectric effect) on the transport properties of LaMnO[sub 3+δ] and CaMnO₃ thin films grown on ferroelectric 0.67Pb(Mg[sub 1/3]Nb[sub 2/3])O₃-0.33PbTiO₃ single-crystal substrates. The ferroelectric poling of the substrate gives rise to a reduction in the in-plane tensile strain of the LaMnO[sub 3+δ] film, which results in a significant decrease in the resistance and increase in the insulator-to-metal transition temperature T[sub P] of the film. The ferroelectric poling also leads to opposite effects on the magnetoresistance (MR) below and above T[sub P], namely, MR is reduced for T<T[sub P] while MR is enhanced for T>T[sub P]. These strain effects are explained in terms of coexisting phases whose volume fractions are modified as a result of the reduction in the Jahn-Teller (JT) distortion due to ferroelectric poling. An investigation of the effects of the strain induced by the converse piezoelectric effect on the resistance of the LaMnO[sub 3+δ] and CaMnO₃ films shows that the resistance-strain coefficients (ΔR/R)/(Δc[sub film]/c[sub film]) of the LaMnO[sub 3+δ] film is much larger than those of the CaMnO₃ film. This result may imply that the strain-induced modification of the electronic bandwidth alone cannot account for the large (ΔR/R)/(Δc[sub film]/c[sub film]) observed in the LaMnO[sub 3+δ] film, and highlights that the strong coupling of charge carriers to JT distortion is crucial for understanding the effects of the substrate-induced strain in manganite thin films. | - |
dcterms.accessRights | open access | en_US |
dcterms.bibliographicCitation | Physical review. B, Condensed matter and materials physics, 1 Mar. 2010, v. 81, no. 10, 104427, p. 1-9 | - |
dcterms.isPartOf | Physical review. B, Condensed matter and materials physics | - |
dcterms.issued | 2010-03-01 | - |
dc.identifier.isi | WOS:000276248700089 | - |
dc.identifier.eissn | 1550-235X | - |
dc.identifier.rosgroupid | r49581 | - |
dc.description.ros | 2009-2010 > Academic research: refereed > Publication in refereed journal | - |
dc.description.oa | Version of Record | en_US |
dc.identifier.FolderNumber | OA_IR/PIRA | en_US |
dc.description.pubStatus | Published | en_US |
Appears in Collections: | Journal/Magazine Article |
Files in This Item:
File | Description | Size | Format | |
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Zheng_Substrate-induced_Strain_Transport.pdf | 353.78 kB | Adobe PDF | View/Open |
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