An investigation of the rare-earth telluride system BaLn2Te4 (Ln = Sm-Tm, Y): Syntheses, crystal structures, and magnetic properties

Amy A. Narducci; Yuting Yang; Michelle A. Digman; Abe B. Sipes; James A. Ibers

doi:10.1016/S0925-8388(00)00653-8

An investigation of the rare-earth telluride system BaLn₂Te₄ (Ln = Sm-Tm, Y): Syntheses, crystal structures, and magnetic properties

Amy A. Narducci^*, Yuting Yang, Michelle A. Digman, Abe B. Sipes, James A. Ibers

^*Corresponding author for this work

Research output: Contribution to journal › Conference article › peer-review

18 Scopus citations

Abstract

Single crystals of BaLn₂Te₄ (Ln = Gd-Tm, Y) form as black needles from the stoichiometric reaction BaTe + 2Ln + 3Te at 1000°C. BaSm₂Te₄ forms as a by-product in the reaction BaTe + Sm+Zn + Te at 850°C with the aid of a BaBr₂/KBr flux. The compounds crystallize with four formula units in the space group D_2h¹⁶-Pnma (No. 62) in the CaFe₂O₄ (calcium ferrite) structure type. Unit cell constants range from a = 13.6883(10) Å, b = 4.5148(3) Å, and c = 16.3427(12) Å in the Sm compound to a = 13.5677(10) Å, b = 4.4058(3) A, and c = 15.9989(12) Å for Tm (t= -120°C). Ln atoms are coordinated by six Te atoms in an octahedral arrangement. These octahedra share corners and edges to form a three-dimensional channel structure. Ba atoms occupy the bicapped trigonal-prismatic sites within these channels. Magnetic susceptibility data for two representative compounds (Ln = Er and Tb) show paramagnetic behavior in the region 5-300 K.

Original language	English (US)
Pages (from-to)	432-439
Number of pages	8
Journal	Journal of Alloys and Compounds
Volume	303-304
DOIs	https://doi.org/10.1016/S0925-8388(00)00653-8
State	Published - May 24 2000
Externally published	Yes
Event	22nd Rare Earth Research Conference - Argonne, IL, United States Duration: Jul 11 1999 → Jul 15 1999

Keywords

Rare-earths
Solid-state compounds
Synthesis
Tellurides

ASJC Scopus subject areas

Mechanics of Materials
Mechanical Engineering
Metals and Alloys
Materials Chemistry

Access to Document

10.1016/S0925-8388(00)00653-8

Cite this

@article{db6a8a34fc9544fc82c760da4867d24b,

title = "An investigation of the rare-earth telluride system BaLn2Te4 (Ln = Sm-Tm, Y): Syntheses, crystal structures, and magnetic properties",

abstract = "Single crystals of BaLn2Te4 (Ln = Gd-Tm, Y) form as black needles from the stoichiometric reaction BaTe + 2Ln + 3Te at 1000°C. BaSm2Te4 forms as a by-product in the reaction BaTe + Sm+Zn + Te at 850°C with the aid of a BaBr2/KBr flux. The compounds crystallize with four formula units in the space group D2h16-Pnma (No. 62) in the CaFe2O4 (calcium ferrite) structure type. Unit cell constants range from a = 13.6883(10) {\AA}, b = 4.5148(3) {\AA}, and c = 16.3427(12) {\AA} in the Sm compound to a = 13.5677(10) {\AA}, b = 4.4058(3) A, and c = 15.9989(12) {\AA} for Tm (t= -120°C). Ln atoms are coordinated by six Te atoms in an octahedral arrangement. These octahedra share corners and edges to form a three-dimensional channel structure. Ba atoms occupy the bicapped trigonal-prismatic sites within these channels. Magnetic susceptibility data for two representative compounds (Ln = Er and Tb) show paramagnetic behavior in the region 5-300 K.",

keywords = "Rare-earths, Solid-state compounds, Synthesis, Tellurides",

author = "Narducci, {Amy A.} and Yuting Yang and Digman, {Michelle A.} and Sipes, {Abe B.} and Ibers, {James A.}",

note = "Funding Information: This research was supported by NSF Grant No. DMR-9709351. A.B. Sipes was funded by NSF Grant No. DMR-9803995 (NSF Summer Research Program in Solid State Chemistry) and M.A. Digman by NSF-MRL Grant No. DMR-9120521. This work made use of Central Facilities supported by the MRSEC program of the National Science Foundation (DMR-9632472) at the Materials Research Center of Northwestern University. We are indebted to M.Z. Lin for his assistance with the magnetic susceptibility measurements and to Dr. Olivier Tougait for his assistance with the synthesis of BaGd 2 Te 4 .; 22nd Rare Earth Research Conference ; Conference date: 11-07-1999 Through 15-07-1999",

year = "2000",

month = may,

day = "24",

doi = "10.1016/S0925-8388(00)00653-8",

language = "English (US)",

volume = "303-304",

pages = "432--439",

journal = "Journal of Alloys and Compounds",

issn = "0925-8388",

publisher = "Elsevier BV",

}

TY - JOUR

T1 - An investigation of the rare-earth telluride system BaLn2Te4 (Ln = Sm-Tm, Y)

T2 - 22nd Rare Earth Research Conference

AU - Narducci, Amy A.

AU - Yang, Yuting

AU - Digman, Michelle A.

AU - Sipes, Abe B.

AU - Ibers, James A.

N1 - Funding Information: This research was supported by NSF Grant No. DMR-9709351. A.B. Sipes was funded by NSF Grant No. DMR-9803995 (NSF Summer Research Program in Solid State Chemistry) and M.A. Digman by NSF-MRL Grant No. DMR-9120521. This work made use of Central Facilities supported by the MRSEC program of the National Science Foundation (DMR-9632472) at the Materials Research Center of Northwestern University. We are indebted to M.Z. Lin for his assistance with the magnetic susceptibility measurements and to Dr. Olivier Tougait for his assistance with the synthesis of BaGd 2 Te 4 .

PY - 2000/5/24

Y1 - 2000/5/24

N2 - Single crystals of BaLn2Te4 (Ln = Gd-Tm, Y) form as black needles from the stoichiometric reaction BaTe + 2Ln + 3Te at 1000°C. BaSm2Te4 forms as a by-product in the reaction BaTe + Sm+Zn + Te at 850°C with the aid of a BaBr2/KBr flux. The compounds crystallize with four formula units in the space group D2h16-Pnma (No. 62) in the CaFe2O4 (calcium ferrite) structure type. Unit cell constants range from a = 13.6883(10) Å, b = 4.5148(3) Å, and c = 16.3427(12) Å in the Sm compound to a = 13.5677(10) Å, b = 4.4058(3) A, and c = 15.9989(12) Å for Tm (t= -120°C). Ln atoms are coordinated by six Te atoms in an octahedral arrangement. These octahedra share corners and edges to form a three-dimensional channel structure. Ba atoms occupy the bicapped trigonal-prismatic sites within these channels. Magnetic susceptibility data for two representative compounds (Ln = Er and Tb) show paramagnetic behavior in the region 5-300 K.

AB - Single crystals of BaLn2Te4 (Ln = Gd-Tm, Y) form as black needles from the stoichiometric reaction BaTe + 2Ln + 3Te at 1000°C. BaSm2Te4 forms as a by-product in the reaction BaTe + Sm+Zn + Te at 850°C with the aid of a BaBr2/KBr flux. The compounds crystallize with four formula units in the space group D2h16-Pnma (No. 62) in the CaFe2O4 (calcium ferrite) structure type. Unit cell constants range from a = 13.6883(10) Å, b = 4.5148(3) Å, and c = 16.3427(12) Å in the Sm compound to a = 13.5677(10) Å, b = 4.4058(3) A, and c = 15.9989(12) Å for Tm (t= -120°C). Ln atoms are coordinated by six Te atoms in an octahedral arrangement. These octahedra share corners and edges to form a three-dimensional channel structure. Ba atoms occupy the bicapped trigonal-prismatic sites within these channels. Magnetic susceptibility data for two representative compounds (Ln = Er and Tb) show paramagnetic behavior in the region 5-300 K.

KW - Rare-earths

KW - Solid-state compounds

KW - Synthesis

KW - Tellurides

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U2 - 10.1016/S0925-8388(00)00653-8

DO - 10.1016/S0925-8388(00)00653-8

M3 - Conference article

AN - SCOPUS:0002086465

SN - 0925-8388

VL - 303-304

SP - 432

EP - 439

JO - Journal of Alloys and Compounds

JF - Journal of Alloys and Compounds

Y2 - 11 July 1999 through 15 July 1999

ER -