skip to main content

DOE PAGESDOE PAGES

Title: Synthesis and characterization of the divalent samarium Zintl-phases SmMg2Bi2 and SmMg2Sb2

Here, single crystals of LnMg2Bi2 (Ln = Yb, Eu, Sm) and SmMg2Sb2 were synthesized using Mg-Bi metal and Mg-Sb metal fluxes, respectively. The crystal structures are of the CaAl2Si2 type with space group P3 m1 (#164, Z = 1): SmMg2Bi2 (a = 4.7745(1)Å, c = 7.8490(2)Å), EuMg2Bi2 (a = 4.7702(1)Å, c = 7.8457(2) Å), YbMg2Bi2 (a = 4.7317(2)Å, c = 7.6524(3) Å), and SmMg2Sb2 (a = 4.6861(1) Å, c = 7.7192(2) Å). Heat capacity, electrical transport, and magnetization of all bismuth containing phases were measured. The materials behave as “poor metals” with resistivity between 2 and 10 mΩ·cm. Temperature independent Van Vleck paramagnetism is observed in SmMg2Bi2 indicative of divalent samarium (Sm2+) ions.
Authors:
 [1] ;  [2] ;  [2] ;  [1]
  1. The National High Magnetic Field Lab., Tallahassee, FL (United States); Florida State Univ., Tallahassee, FL (United States); Florida Agricultural and Mechanical Univ.-Florida State Univ. College of Engineering, Tallahassee, FL (United States)
  2. The National High Magnetic Field Lab., Tallahassee, FL (United States); Florida Agricultural and Mechanical Univ.-Florida State Univ. College of Engineering, Tallahassee, FL (United States)
Publication Date:
OSTI Identifier:
1333510
Grant/Contract Number:
SC0008832
Type:
Accepted Manuscript
Journal Name:
Journal of Solid State Chemistry
Additional Journal Information:
Journal Volume: 231; Journal Issue: C; Journal ID: ISSN 0022-4596
Publisher:
Elsevier
Research Org:
Florida State Univ., Tallahassee, FL (United States)
Sponsoring Org:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; 36 MATERIALS SCIENCE phase transition; magnetism; CaAl2Si2; METAL; Zintl-phase; SmMg2Bi2; SmMg2Sb2; X-ray diffraction; specific heat; Van Vleck paramagnetism; flux synthesis