Discovery of beta-LnNiSb3 (Ln = La, Ce): crystal growth, structure, and magnetic and transport behavior.
A new polymorph of CeNiSb3 has been grown from a Sn flux and characterized by single-crystal X-ray diffraction. beta-CeNiSb3 crystallizes in the orthorhombic space group Pbcm (No. 57) with Z = 8. The unit cell parameters are a = 12.9170(2) A, b = 6.1210(5) A, c = 12.0930(6) A, and V = 956.13(9) A3. Its layered structure contains structural motifs similar to that of the first form of CeNiSb3 and consists of Ce atoms inserted between anionic layers of nearly square infinity2[Sb] nets and distorted infinity2[NiSb2] octahedra. We report the synthesis, magnetization, electrical resistivity, and specific heat of the new form of CeNiSb3 and compare the structures and physical properties of both polymorphs.
Thomas
Evan Lyle
EL
Department of Chemistry, Louisiana State University, 232 Choppin Hall, Baton Rouge, Louisiana 70803, USA.
Gautreaux
Dixie P
DP
Lee
Han-Oh
HO
Fisk
Zachary
Z
Chan
Julia Y
JY
D000497:Alloys / Q000138:chemical synthesis / Q000737:chemistry*; D000965:Antimony / Q000737:chemistry*; D002563:Cerium / Q000737:chemistry*; D018360:Crystallography, X-Ray; D017097:Electric Impedance; D007811:Lanthanum / Q000737:chemistry*; D008280:Magnetics; D008958:Models, Molecular; D009532:Nickel / Q000737:chemistry*; D044367:Phase Transition; D013696:Temperature; D013816:Thermodynamics
D000497:Alloys; C519939:CeNiSb3; C519938:LaNiSb3; D002563:Cerium; D007811:Lanthanum; D009532:Nickel; D000965:Antimony