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Synthesis and thermodynamic properties of superconducting NdPd1-δBi2 (δ∼0.23) single crystals.

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Title: Synthesis and thermodynamic properties of superconducting NdPd1-δBi2 (δ∼0.23) single crystals.
Authors: Zhang, F.M.1,2, Zhou, W.1,2 wei.zhou@cslg.edu.cn, Xu, C.Q.2, Liu, S.W.2, Zhang, J.Y.2, Xia, M.2, Xu, Xiaofeng2, Qian, B.1,2 njqb@cslg.edu.cn
Source: Journal of Alloys & Compounds. Apr2019, Vol. 782, p170-175. 6p.
Subjects: Electron synchrotrons, Electron counters, Photon-electron interactions, Electron-phonon interactions, Leptons (Nuclear physics)
Abstract: Abstract The interesting phenomena induced by the interaction between local moments and itinerant electrons in 4 f compounds have attracted extensive attention for many years. Here, we report the synthesis of a new 4 f compound, i.e. NdPd 1- δ Bi 2 (δ ∼0.23) which is superconducting with a transition temperature T c around 3.2 K. A comprehensive investigation of the thermodynamic properties suggests NdPd 1- δ Bi 2 is also an anti-ferromagnet with the Néel temperature T N ∼4 K. Moreover, its high-temperature paramagnetic state is characterized by an enhanced heat capacity with a Sommerfeld coefficient γ over 300 mJ mol−1 K−2, which presumably results from Nd3+ crystal-electric-field splitting rather than the Kondo effect. In the superconducting state, the suppression of superconductivity with field increasing for H || c is faster in comparison with H || ab , resulting in a moderate upper critical field anisotropy with Γ = H c 2 (0 K , ‖ a b) / H c 2 (0 K , ‖ c) ∼2.6. Collectively, NdPd 1- δ Bi 2 may serve as an intriguing system to study the interplay among magnetic order, Kondo effect, and superconductivity in 4 f compounds. Highlights • A new superconducting 4 f compound with T c ∼3.2 K is discovered. • Coexistence of superconductivity and antiferromagnetic order is observed. • The Sommerfeld coefficient γ value is over 300 mJ mol−1 K−2. • The upper critical fields exceed the Pauli limit. [ABSTRACT FROM AUTHOR]
Copyright of Journal of Alloys & Compounds 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: 134687859
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
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  Data: Synthesis and thermodynamic properties of superconducting NdPd1-δBi2 (δ∼0.23) single crystals.
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  Data: <searchLink fieldCode="AR" term="%22Zhang%2C+F%2EM%2E%22">Zhang, F.M.</searchLink><relatesTo>1,2</relatesTo><br /><searchLink fieldCode="AR" term="%22Zhou%2C+W%2E%22">Zhou, W.</searchLink><relatesTo>1,2</relatesTo><i> wei.zhou@cslg.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Xu%2C+C%2EQ%2E%22">Xu, C.Q.</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Liu%2C+S%2EW%2E%22">Liu, S.W.</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Zhang%2C+J%2EY%2E%22">Zhang, J.Y.</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Xia%2C+M%2E%22">Xia, M.</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Xu%2C+Xiaofeng%22">Xu, Xiaofeng</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Qian%2C+B%2E%22">Qian, B.</searchLink><relatesTo>1,2</relatesTo><i> njqb@cslg.edu.cn</i>
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  Data: <searchLink fieldCode="JN" term="%22Journal+of+Alloys+%26+Compounds%22">Journal of Alloys & Compounds</searchLink>. Apr2019, Vol. 782, p170-175. 6p.
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  Data: <searchLink fieldCode="DE" term="%22Electron+synchrotrons%22">Electron synchrotrons</searchLink><br /><searchLink fieldCode="DE" term="%22Electron+counters%22">Electron counters</searchLink><br /><searchLink fieldCode="DE" term="%22Photon-electron+interactions%22">Photon-electron interactions</searchLink><br /><searchLink fieldCode="DE" term="%22Electron-phonon+interactions%22">Electron-phonon interactions</searchLink><br /><searchLink fieldCode="DE" term="%22Leptons+%28Nuclear+physics%29%22">Leptons (Nuclear physics)</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Abstract The interesting phenomena induced by the interaction between local moments and itinerant electrons in 4 f compounds have attracted extensive attention for many years. Here, we report the synthesis of a new 4 f compound, i.e. NdPd 1- δ Bi 2 (δ ∼0.23) which is superconducting with a transition temperature T c around 3.2 K. A comprehensive investigation of the thermodynamic properties suggests NdPd 1- δ Bi 2 is also an anti-ferromagnet with the Néel temperature T N ∼4 K. Moreover, its high-temperature paramagnetic state is characterized by an enhanced heat capacity with a Sommerfeld coefficient γ over 300 mJ mol−1 K−2, which presumably results from Nd3+ crystal-electric-field splitting rather than the Kondo effect. In the superconducting state, the suppression of superconductivity with field increasing for H || c is faster in comparison with H || ab , resulting in a moderate upper critical field anisotropy with Γ = H c 2 (0 K , ‖ a b) / H c 2 (0 K , ‖ c) ∼2.6. Collectively, NdPd 1- δ Bi 2 may serve as an intriguing system to study the interplay among magnetic order, Kondo effect, and superconductivity in 4 f compounds. Highlights • A new superconducting 4 f compound with T c ∼3.2 K is discovered. • Coexistence of superconductivity and antiferromagnetic order is observed. • The Sommerfeld coefficient γ value is over 300 mJ mol−1 K−2. • The upper critical fields exceed the Pauli limit. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Journal of Alloys & Compounds 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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        Value: 10.1016/j.jallcom.2018.12.076
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        Text: English
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      – SubjectFull: Electron synchrotrons
        Type: general
      – SubjectFull: Electron counters
        Type: general
      – SubjectFull: Photon-electron interactions
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      – SubjectFull: Electron-phonon interactions
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      – SubjectFull: Leptons (Nuclear physics)
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      – TitleFull: Synthesis and thermodynamic properties of superconducting NdPd1-δBi2 (δ∼0.23) single crystals.
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              Text: Apr2019
              Type: published
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