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Synthesis and HRTEM Investigation of EuRbFe 4 As 4 Superconductor.
- Source :
- Nanomaterials (2079-4991); Nov2022, Vol. 12 Issue 21, p3801, 9p
- Publication Year :
- 2022
-
Abstract
- In the stoichiometric iron-based superconductor EuRbFe<subscript>4</subscript>As<subscript>4</subscript>, superconductivity coexists with a long-range magnetic ordering in Eu layers. Using high-resolution transmission electron microscopy (HRTEM), we observed an atomic structure of as-grown EuRbFe<subscript>4</subscript>As<subscript>4</subscript> crystals. HRTEM shows that crystals have two-dimensional intrinsic nanoinclusions established to be the RbFe<subscript>2</subscript>As<subscript>2</subscript> (122) phase with a volume fraction of ~5.6%. In contrast with the CaKFe<subscript>4</subscript>As<subscript>4</subscript> compound, similar inclusions are not superconducting down to 2 K, and no second magnetization peak was observed in the magnetization measurements at low temperature with B ‖ ab. We show that the non-superconducting 122 phase nanoinclusions could act as 2D pinning centers. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 20794991
- Volume :
- 12
- Issue :
- 21
- Database :
- Complementary Index
- Journal :
- Nanomaterials (2079-4991)
- Publication Type :
- Academic Journal
- Accession number :
- 160206753
- Full Text :
- https://doi.org/10.3390/nano12213801