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Spin glass state and field induced ultra-sharp magnetic transitions in Nd5Ge2Si.

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Title: Spin glass state and field induced ultra-sharp magnetic transitions in Nd5Ge2Si.
Authors: Maji, Bibekananda1 (AUTHOR) bibekanandamaji@gmail.com, Modak, M.2 (AUTHOR), Mondal, S.2,3 (AUTHOR), Ray, M.K.2 (AUTHOR), Suresh, K.G.4 (AUTHOR)
Source: Physica B. Oct2019, Vol. 570, p182-186. 5p.
Subjects: Magnetic transitions, Glass fibers, Metamagnetism, Binoculars, Low temperatures, Debye temperatures
Abstract: We have observed a sharp anomaly near 40 K in the zero field cooled (ZFC) dc magnetization data along with a very large thermomagnetic irreversibility (TMI) in Nd 5 Ge 2 Si. The ac susceptibility data shows a frequency dependent cusp near the same temperature and dynamic scaling behavior in this compound. We also report the observation of multiple field induced irreversible ultra-sharp metamagnetic jumps in the magnetization isotherms at low temperatures, associated to the field induced antiferromagnetic (AFM) to ferromagnetic (FM) transition. These metamagnetic transitions persist up to near 40 K but lose the sharpness with temperature. The temperature variation of △ S M curve has a positive to negative crossover near 35 K along with a positive peak near 32 K and negative peaks near 49 and 60 K respectively. These features indicate the presence of spin glass state below the characteristic freezing temperature T SG ≈ 40 K. [ABSTRACT FROM AUTHOR]
Copyright of Physica B is the property of Elsevier B.V. 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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Header DbId: egs
DbLabel: Engineering Source
An: 138142289
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
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  Data: Spin glass state and field induced ultra-sharp magnetic transitions in Nd5Ge2Si.
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  Data: <searchLink fieldCode="AR" term="%22Maji%2C+Bibekananda%22">Maji, Bibekananda</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> bibekanandamaji@gmail.com</i><br /><searchLink fieldCode="AR" term="%22Modak%2C+M%2E%22">Modak, M.</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Mondal%2C+S%2E%22">Mondal, S.</searchLink><relatesTo>2,3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Ray%2C+M%2EK%2E%22">Ray, M.K.</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Suresh%2C+K%2EG%2E%22">Suresh, K.G.</searchLink><relatesTo>4</relatesTo> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22Physica+B%22">Physica B</searchLink>. Oct2019, Vol. 570, p182-186. 5p.
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  Data: <searchLink fieldCode="DE" term="%22Magnetic+transitions%22">Magnetic transitions</searchLink><br /><searchLink fieldCode="DE" term="%22Glass+fibers%22">Glass fibers</searchLink><br /><searchLink fieldCode="DE" term="%22Metamagnetism%22">Metamagnetism</searchLink><br /><searchLink fieldCode="DE" term="%22Binoculars%22">Binoculars</searchLink><br /><searchLink fieldCode="DE" term="%22Low+temperatures%22">Low temperatures</searchLink><br /><searchLink fieldCode="DE" term="%22Debye+temperatures%22">Debye temperatures</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: We have observed a sharp anomaly near 40 K in the zero field cooled (ZFC) dc magnetization data along with a very large thermomagnetic irreversibility (TMI) in Nd 5 Ge 2 Si. The ac susceptibility data shows a frequency dependent cusp near the same temperature and dynamic scaling behavior in this compound. We also report the observation of multiple field induced irreversible ultra-sharp metamagnetic jumps in the magnetization isotherms at low temperatures, associated to the field induced antiferromagnetic (AFM) to ferromagnetic (FM) transition. These metamagnetic transitions persist up to near 40 K but lose the sharpness with temperature. The temperature variation of △ S M curve has a positive to negative crossover near 35 K along with a positive peak near 32 K and negative peaks near 49 and 60 K respectively. These features indicate the presence of spin glass state below the characteristic freezing temperature T SG ≈ 40 K. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Physica B is the property of Elsevier B.V. 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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      – Type: doi
        Value: 10.1016/j.physb.2019.06.025
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      – Code: eng
        Text: English
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        PageCount: 5
        StartPage: 182
    Subjects:
      – SubjectFull: Magnetic transitions
        Type: general
      – SubjectFull: Glass fibers
        Type: general
      – SubjectFull: Metamagnetism
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      – SubjectFull: Binoculars
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      – SubjectFull: Low temperatures
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      – SubjectFull: Debye temperatures
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      – TitleFull: Spin glass state and field induced ultra-sharp magnetic transitions in Nd5Ge2Si.
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              Text: Oct2019
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