Structure, electrical and magnetic properties of CaAs3, SrAs3, BaAs3 and EuAs3

doi:10.1016/0022-3697(81)90122-0

Journal of Physics and Chemistry of Solids

Volume 42, Issue 8, 1981, Pages 687-695

https://doi.org/10.1016/0022-3697(81)90122-0 Get rights and content

Abstract

The crystal structures and electrical properties of CaAs₃, SrAs₃, BaAs₃ and EuAs₃ have been studied by single crystal X-ray investigations, temperature dependent resistivity measurements and optical measurements. The structures of the triclinic CaAs₃ and monoclinic SrAs₃, BaAs₃ and EuAs₃ are closely related. The two-dimensional infinite polyanionic AS₃²⁻ nets are derivatives of the black phosphorus structure. CaAs₃ and BaAs₃ are semiconducting, while SrAs₃ and EuAs₃ show semimetallic behavior. The paramagnetic EuAs₃ undergoes a magnetic phase transition at 10.5 K.

References (29)

J.F. Brice et al.
J. Solid State Chem.
(1976)
S. Ono et al.
J. Less-Common Metals
(1971)
A.L. Jain
Phys. Rev.
(1959)
G. Busch et al.
J. Phys. Chem. Solids
(1971)
W.Q. Myers
Rev. Mod. Phys.
(1952)
H.G. von Schnering
D.E.C. Corbridge
K. Deller et al.
Z. Naturforsch.
(1976)
von Schnering H. G., Schmettow W. and Wittmann M. (to be...
W. Schmettow et al.
Angew. Chem.
(1977)

Schmettow W. and von Schnering H. G. (to be...

Sheldrick G., Programmsystem Shelx-76...

XTL Syntex Analytical Instruments, inc....

W.R. Busing et al.

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Structure, electrical and magnetic properties of CaAs3, SrAs3, BaAs3 and EuAs3

Abstract

J. Solid State Chem.

J. Less-Common Metals

Phys. Rev.

J. Phys. Chem. Solids

Rev. Mod. Phys.

Z. Naturforsch.

Angew. Chem.

Structure, electrical and magnetic properties of CaAs₃, SrAs₃, BaAs₃ and EuAs₃