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Title: New Tetragonal ReGa5(M) (M = Sn, Pb, Bi) Single Crystals Grown from Delicate Electrons Changing

Abstract

Single crystals of the new Ga-rich phases ReGa~5(Sn), ReGa~5(Pb) and ReGa~5(Bi) were successfully obtained from the flux method. The new tetragonal phases crystallize in the space group P4/mnc (No. 128) with vertex-sharing capped Re2@Ga14 oblong chains. Vacancies were discovered on the Ga4 and Ga5 sites, which can be understood as the direct inclusion of elemental Sn, Pb and Bi into the structure. Heat capacity measurements were performed on all three compounds resulting in a small anomaly which resembles the superconductivity transition temperature from the impurity ReGa5 phase. The three compounds were not superconducting above 1.85 K. Subsequently, electronic structure calculations revealed a high density of states around the Fermi level, as well as non-bonding interactions that likely indicate the stability of these new phases.

Authors:
 [1];  [2];  [1]; ORCiD logo [2];  [1]
  1. Louisiana State Univ., Baton Rouge, LA (United States)
  2. Gdansk Univ. of Technology (Poland)
Publication Date:
Research Org.:
Louisiana State Univ., Baton Rouge, LA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES); National Science Centre
OSTI Identifier:
1602038
Grant/Contract Number:  
SC0012432; UMO-2018/30/M/ST5/00773
Resource Type:
Accepted Manuscript
Journal Name:
Crystals
Additional Journal Information:
Journal Volume: 9; Journal Issue: 10; Journal ID: ISSN 2073-4352
Publisher:
MDPI
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; endohedral; gallide; clusters

Citation Formats

Marshall, Madalynn, Górnicka, Karolina, Mudiyanselage, Ranuri S. Dissanayaka, Klimczuk, Tomasz, and Xie, Weiwei. New Tetragonal ReGa5(M) (M = Sn, Pb, Bi) Single Crystals Grown from Delicate Electrons Changing. United States: N. p., 2019. Web. https://doi.org/10.3390/cryst9100527.
Marshall, Madalynn, Górnicka, Karolina, Mudiyanselage, Ranuri S. Dissanayaka, Klimczuk, Tomasz, & Xie, Weiwei. New Tetragonal ReGa5(M) (M = Sn, Pb, Bi) Single Crystals Grown from Delicate Electrons Changing. United States. https://doi.org/10.3390/cryst9100527
Marshall, Madalynn, Górnicka, Karolina, Mudiyanselage, Ranuri S. Dissanayaka, Klimczuk, Tomasz, and Xie, Weiwei. Mon . "New Tetragonal ReGa5(M) (M = Sn, Pb, Bi) Single Crystals Grown from Delicate Electrons Changing". United States. https://doi.org/10.3390/cryst9100527. https://www.osti.gov/servlets/purl/1602038.
@article{osti_1602038,
title = {New Tetragonal ReGa5(M) (M = Sn, Pb, Bi) Single Crystals Grown from Delicate Electrons Changing},
author = {Marshall, Madalynn and Górnicka, Karolina and Mudiyanselage, Ranuri S. Dissanayaka and Klimczuk, Tomasz and Xie, Weiwei},
abstractNote = {Single crystals of the new Ga-rich phases ReGa~5(Sn), ReGa~5(Pb) and ReGa~5(Bi) were successfully obtained from the flux method. The new tetragonal phases crystallize in the space group P4/mnc (No. 128) with vertex-sharing capped Re2@Ga14 oblong chains. Vacancies were discovered on the Ga4 and Ga5 sites, which can be understood as the direct inclusion of elemental Sn, Pb and Bi into the structure. Heat capacity measurements were performed on all three compounds resulting in a small anomaly which resembles the superconductivity transition temperature from the impurity ReGa5 phase. The three compounds were not superconducting above 1.85 K. Subsequently, electronic structure calculations revealed a high density of states around the Fermi level, as well as non-bonding interactions that likely indicate the stability of these new phases.},
doi = {10.3390/cryst9100527},
journal = {Crystals},
number = 10,
volume = 9,
place = {United States},
year = {2019},
month = {10}
}

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