Magneto-transport and ferromagnetic resonance studies of polycrystalline La0.6Pb0.4MnO3 thin films
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| Title: | Magneto-transport and ferromagnetic resonance studies of polycrystalline La |
|---|---|
| Authors: | Singh, Ajay1, Chowdhury, P.1, Padma, N.1, Aswal, D.K.1, Kadam, R.M.2, Babu, Y.2, Kumar, M.L. Jayanth2, Viswanadham, C.S.3, Goswami, G.L.3, Gupta, S.K.1 drgupta@magnum.barc.ernet.in, Yakhmi, J.V.1 |
| Source: | Solid State Communications. Feb2006, Vol. 137 Issue 8, p456-461. 6p. |
| Subjects: | Thin films, Surfaces (Technology), Crystal growth, Dislocations in crystals |
| Abstract: | Abstract: To understand the nature of grain boundaries in polycrystalline materials, magneto-transport and ferromagnetic resonance measurement have been performed in polycrystalline La0.6Pb0.4MnO3 (LPMO) thin films prepared by pulsed laser deposition. Films are found to undergo a semiconductor to metal transition at 230K and re-enter into the semiconducting state below 130K. Microwave absorption measurements carried out as function of applied field show two components of resonant absorption signal. First component is in accordance with ferromagnetic transition of grains at Curie temperature and the second component shows antiferromagnetic transition of grain boundaries at 160K. An additional non-resonant absorption signal centered at zero field has also been observed that supports transition from conducting to insulating grain boundaries at ∼160K. Further, temperature dependence of resistance in semiconducting state at low temperatures is in accordance with coulomb blockade model indicating insulating nature of AFM grain boundaries. [Copyright &y& Elsevier] |
| Copyright of Solid State Communications is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
| FullText | Text: Availability: 0 |
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| Header | DbId: egs DbLabel: Engineering Source An: 19702761 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Magneto-transport and ferromagnetic resonance studies of polycrystalline La<subscript>0.6</subscript>Pb<subscript>0.4</subscript>MnO<subscript>3</subscript> thin films – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Singh%2C+Ajay%22">Singh, Ajay</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Chowdhury%2C+P%2E%22">Chowdhury, P.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Padma%2C+N%2E%22">Padma, N.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Aswal%2C+D%2EK%2E%22">Aswal, D.K.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Kadam%2C+R%2EM%2E%22">Kadam, R.M.</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Babu%2C+Y%2E%22">Babu, Y.</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Kumar%2C+M%2EL%2E+Jayanth%22">Kumar, M.L. Jayanth</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Viswanadham%2C+C%2ES%2E%22">Viswanadham, C.S.</searchLink><relatesTo>3</relatesTo><br /><searchLink fieldCode="AR" term="%22Goswami%2C+G%2EL%2E%22">Goswami, G.L.</searchLink><relatesTo>3</relatesTo><br /><searchLink fieldCode="AR" term="%22Gupta%2C+S%2EK%2E%22">Gupta, S.K.</searchLink><relatesTo>1</relatesTo><i> drgupta@magnum.barc.ernet.in</i><br /><searchLink fieldCode="AR" term="%22Yakhmi%2C+J%2EV%2E%22">Yakhmi, J.V.</searchLink><relatesTo>1</relatesTo> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Solid+State+Communications%22">Solid State Communications</searchLink>. Feb2006, Vol. 137 Issue 8, p456-461. 6p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Thin+films%22">Thin films</searchLink><br /><searchLink fieldCode="DE" term="%22Surfaces+%28Technology%29%22">Surfaces (Technology)</searchLink><br /><searchLink fieldCode="DE" term="%22Crystal+growth%22">Crystal growth</searchLink><br /><searchLink fieldCode="DE" term="%22Dislocations+in+crystals%22">Dislocations in crystals</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Abstract: To understand the nature of grain boundaries in polycrystalline materials, magneto-transport and ferromagnetic resonance measurement have been performed in polycrystalline La0.6Pb0.4MnO3 (LPMO) thin films prepared by pulsed laser deposition. Films are found to undergo a semiconductor to metal transition at 230K and re-enter into the semiconducting state below 130K. Microwave absorption measurements carried out as function of applied field show two components of resonant absorption signal. First component is in accordance with ferromagnetic transition of grains at Curie temperature and the second component shows antiferromagnetic transition of grain boundaries at 160K. An additional non-resonant absorption signal centered at zero field has also been observed that supports transition from conducting to insulating grain boundaries at ∼160K. Further, temperature dependence of resistance in semiconducting state at low temperatures is in accordance with coulomb blockade model indicating insulating nature of AFM grain boundaries. [Copyright &y& Elsevier] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Solid State Communications is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1016/j.ssc.2005.12.015 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 6 StartPage: 456 Subjects: – SubjectFull: Thin films Type: general – SubjectFull: Surfaces (Technology) Type: general – SubjectFull: Crystal growth Type: general – SubjectFull: Dislocations in crystals Type: general Titles: – TitleFull: Magneto-transport and ferromagnetic resonance studies of polycrystalline La0.6Pb0.4MnO3 thin films Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Singh, Ajay – PersonEntity: Name: NameFull: Chowdhury, P. – PersonEntity: Name: NameFull: Padma, N. – PersonEntity: Name: NameFull: Aswal, D.K. – PersonEntity: Name: NameFull: Kadam, R.M. – PersonEntity: Name: NameFull: Babu, Y. – PersonEntity: Name: NameFull: Kumar, M.L. Jayanth – PersonEntity: Name: NameFull: Viswanadham, C.S. – PersonEntity: Name: NameFull: Goswami, G.L. – PersonEntity: Name: NameFull: Gupta, S.K. – PersonEntity: Name: NameFull: Yakhmi, J.V. IsPartOfRelationships: – BibEntity: Dates: – D: 22 M: 02 Text: Feb2006 Type: published Y: 2006 Identifiers: – Type: issn-print Value: 00381098 Numbering: – Type: volume Value: 137 – Type: issue Value: 8 Titles: – TitleFull: Solid State Communications Type: main |
| ResultId | 1 |
