Probing Phosphorus Solubility and Its Effect on Critical Temperature (Tc) in the Helical Superconducting Magnet RbEuFe4As4-xPx

Mohammad Usman; Xiuquan Zhou; Christos D. Malliakas; Ulrich Welp; Wai Kwong Kwok; Duck Young Chung; Mercouri G. Kanatzidis

doi:10.1021/acs.chemmater.3c01310

Probing Phosphorus Solubility and Its Effect on Critical Temperature (T_c) in the Helical Superconducting Magnet RbEuFe₄As_4-xP_x

Mohammad Usman, Xiuquan Zhou, Christos D. Malliakas, Ulrich Welp, Wai Kwong Kwok, Duck Young Chung, Mercouri G. Kanatzidis^*

^*Corresponding author for this work

Chemistry

Research output: Contribution to journal › Article › peer-review

Abstract

RbEuFe₄As₄ exhibits a rare combination of high-temperature superconductivity and noncollinear magnetism, originating from the FeAs and Eu layers, respectively. In order to fine-tune its superconducting and magnetic properties, we studied P-doped RbEuFe₄As_4-xP_x. To determine the value of x for which RbEuFe₄As_4-xP_x exists, members of the series have been synthesized in the form of relatively large-sized single crystals by a high-temperature flux growth technique using RbAs flux as well as polycrystalline powder by direct combination reactions between RbFe₂As₂ and EuFe₂As_2-xP_x. The flux crystal growth reactions indicate that RbEuFe₄As_4-xP_x forms with the values of x ≤ 0.12, which is corroborated by the Rietveld refinement analysis on the products obtained from direct combination reactions. The solubility limit exists primarily due to the preferential site As(2) occupation by P in the RbEuFe₄As₄ crystal structure.

Original language	English (US)
Pages (from-to)	8494-8501
Number of pages	8
Journal	Chemistry of Materials
Volume	35
Issue number	20
DOIs	https://doi.org/10.1021/acs.chemmater.3c01310
State	Published - Oct 24 2023

Funding

This work was supported by the U.S. Department of Energy, Office of Science, Basic Energy Sciences, Materials Sciences and Engineering Division. EDS/SEM analysis and synchrotron X-ray diffraction study were carried out by use of the Office of Science user facilities, Center for Nanoscale Materials (CNM) and Advanced Photon Source (APS), respectively, supported by the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences, under Contract No. DE-AC02-06CH11357.

ASJC Scopus subject areas

General Chemistry
General Chemical Engineering
Materials Chemistry

Access to Document

10.1021/acs.chemmater.3c01310

Cite this

@article{8056866e8f634b999a496de97277d432,

title = "Probing Phosphorus Solubility and Its Effect on Critical Temperature (Tc) in the Helical Superconducting Magnet RbEuFe4As4-xPx",

abstract = "RbEuFe4As4 exhibits a rare combination of high-temperature superconductivity and noncollinear magnetism, originating from the FeAs and Eu layers, respectively. In order to fine-tune its superconducting and magnetic properties, we studied P-doped RbEuFe4As4-xPx. To determine the value of x for which RbEuFe4As4-xPx exists, members of the series have been synthesized in the form of relatively large-sized single crystals by a high-temperature flux growth technique using RbAs flux as well as polycrystalline powder by direct combination reactions between RbFe2As2 and EuFe2As2-xPx. The flux crystal growth reactions indicate that RbEuFe4As4-xPx forms with the values of x ≤ 0.12, which is corroborated by the Rietveld refinement analysis on the products obtained from direct combination reactions. The solubility limit exists primarily due to the preferential site As(2) occupation by P in the RbEuFe4As4 crystal structure.",

author = "Mohammad Usman and Xiuquan Zhou and Malliakas, {Christos D.} and Ulrich Welp and Kwok, {Wai Kwong} and Chung, {Duck Young} and Kanatzidis, {Mercouri G.}",

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AU - Usman, Mohammad

AU - Zhou, Xiuquan

AU - Malliakas, Christos D.

AU - Welp, Ulrich

AU - Kwok, Wai Kwong

AU - Chung, Duck Young

AU - Kanatzidis, Mercouri G.

PY - 2023/10/24

Y1 - 2023/10/24

N2 - RbEuFe4As4 exhibits a rare combination of high-temperature superconductivity and noncollinear magnetism, originating from the FeAs and Eu layers, respectively. In order to fine-tune its superconducting and magnetic properties, we studied P-doped RbEuFe4As4-xPx. To determine the value of x for which RbEuFe4As4-xPx exists, members of the series have been synthesized in the form of relatively large-sized single crystals by a high-temperature flux growth technique using RbAs flux as well as polycrystalline powder by direct combination reactions between RbFe2As2 and EuFe2As2-xPx. The flux crystal growth reactions indicate that RbEuFe4As4-xPx forms with the values of x ≤ 0.12, which is corroborated by the Rietveld refinement analysis on the products obtained from direct combination reactions. The solubility limit exists primarily due to the preferential site As(2) occupation by P in the RbEuFe4As4 crystal structure.

AB - RbEuFe4As4 exhibits a rare combination of high-temperature superconductivity and noncollinear magnetism, originating from the FeAs and Eu layers, respectively. In order to fine-tune its superconducting and magnetic properties, we studied P-doped RbEuFe4As4-xPx. To determine the value of x for which RbEuFe4As4-xPx exists, members of the series have been synthesized in the form of relatively large-sized single crystals by a high-temperature flux growth technique using RbAs flux as well as polycrystalline powder by direct combination reactions between RbFe2As2 and EuFe2As2-xPx. The flux crystal growth reactions indicate that RbEuFe4As4-xPx forms with the values of x ≤ 0.12, which is corroborated by the Rietveld refinement analysis on the products obtained from direct combination reactions. The solubility limit exists primarily due to the preferential site As(2) occupation by P in the RbEuFe4As4 crystal structure.

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