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Magnetic relaxation and phase separation in manganite Eu0.55Sr0.45MnO3

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Title: Magnetic relaxation and phase separation in manganite Eu0.55Sr0.45MnO3
Authors: Wang, Jin-Zhi1,2,3 chenrj@nimte.ac.cn, Sun, Ji-Rong2, Dong, Qiao-Yan2, Liu, Guan-Juan2, Shen, Bao-Gen2
Source: Solid State Communications. Feb2009, Vol. 149 Issue 7/8, p325-328. 4p.
Subjects: Manganite, Relaxation (Nuclear physics), Phase partition, Curie temperature, Magnetization, Ferromagnetism
Abstract: Abstract: We present a study of the magnetic relaxation behavior of the phase-separated manganite Eu0.55Sr0.45MnO3. A local maximum of the magnetic viscosity is observed around the magnetic freezing temperature and near the Curie temperature, respectively. The former is ascribed to relaxation of the proportion of coexisting ferromagnetic and non-ferromagnetic phases from a magnetic frozen matrix. A quantitative relation established between and the initial normalized magnetization before relaxation, , shows that keeps constant at low values, reaches a broad maximum around , then decreases rapidly, and finally remains at nearly zero for . The latter local maximum of , much smaller than the former in magnitude, is possibly associated with both the relaxation of the proportion of coexisting phases and the reorientation of magnetic moments in ferromagnetic domains. Thermoelectric and magnetic relaxation results further indicate the existence of a definite temperature between which and the metal-insulator transition magnetic inhomogeneity is significant. Based on these results, a temperature and field dependent scenario of phase separation in Eu0.55Sr0.45MnO3 is proposed. [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
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DbLabel: Engineering Source
An: 36114089
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PubType: Academic Journal
PubTypeId: academicJournal
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  Data: Magnetic relaxation and phase separation in manganite Eu<subscript>0.55</subscript>Sr<subscript>0.45</subscript>MnO<subscript>3</subscript>
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  Data: <searchLink fieldCode="AR" term="%22Wang%2C+Jin-Zhi%22">Wang, Jin-Zhi</searchLink><relatesTo>1,2,3</relatesTo><i> chenrj@nimte.ac.cn</i><br /><searchLink fieldCode="AR" term="%22Sun%2C+Ji-Rong%22">Sun, Ji-Rong</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Dong%2C+Qiao-Yan%22">Dong, Qiao-Yan</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Liu%2C+Guan-Juan%22">Liu, Guan-Juan</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Shen%2C+Bao-Gen%22">Shen, Bao-Gen</searchLink><relatesTo>2</relatesTo>
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  Data: <searchLink fieldCode="JN" term="%22Solid+State+Communications%22">Solid State Communications</searchLink>. Feb2009, Vol. 149 Issue 7/8, p325-328. 4p.
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  Data: <searchLink fieldCode="DE" term="%22Manganite%22">Manganite</searchLink><br /><searchLink fieldCode="DE" term="%22Relaxation+%28Nuclear+physics%29%22">Relaxation (Nuclear physics)</searchLink><br /><searchLink fieldCode="DE" term="%22Phase+partition%22">Phase partition</searchLink><br /><searchLink fieldCode="DE" term="%22Curie+temperature%22">Curie temperature</searchLink><br /><searchLink fieldCode="DE" term="%22Magnetization%22">Magnetization</searchLink><br /><searchLink fieldCode="DE" term="%22Ferromagnetism%22">Ferromagnetism</searchLink>
– Name: Abstract
  Label: Abstract
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  Data: Abstract: We present a study of the magnetic relaxation behavior of the phase-separated manganite Eu0.55Sr0.45MnO3. A local maximum of the magnetic viscosity is observed around the magnetic freezing temperature and near the Curie temperature, respectively. The former is ascribed to relaxation of the proportion of coexisting ferromagnetic and non-ferromagnetic phases from a magnetic frozen matrix. A quantitative relation established between and the initial normalized magnetization before relaxation, , shows that keeps constant at low values, reaches a broad maximum around , then decreases rapidly, and finally remains at nearly zero for . The latter local maximum of , much smaller than the former in magnitude, is possibly associated with both the relaxation of the proportion of coexisting phases and the reorientation of magnetic moments in ferromagnetic domains. Thermoelectric and magnetic relaxation results further indicate the existence of a definite temperature between which and the metal-insulator transition magnetic inhomogeneity is significant. Based on these results, a temperature and field dependent scenario of phase separation in Eu0.55Sr0.45MnO3 is proposed. [Copyright &y& Elsevier]
– Name: AbstractSuppliedCopyright
  Label:
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  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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        Value: 10.1016/j.ssc.2008.11.030
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        Text: English
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        PageCount: 4
        StartPage: 325
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        Type: general
      – SubjectFull: Relaxation (Nuclear physics)
        Type: general
      – SubjectFull: Phase partition
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      – SubjectFull: Curie temperature
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      – SubjectFull: Magnetization
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      – SubjectFull: Ferromagnetism
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      – TitleFull: Magnetic relaxation and phase separation in manganite Eu0.55Sr0.45MnO3
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            NameFull: Wang, Jin-Zhi
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            NameFull: Sun, Ji-Rong
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            NameFull: Liu, Guan-Juan
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            NameFull: Shen, Bao-Gen
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              Text: Feb2009
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              Y: 2009
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