RE2MAl6Si4 (RE = Gd, Tb, Dy; M = Au, Pt)

Layered Quaternary Intermetallics Featuring CaAl2Si2-Type and YNiAl4Ge2-Type Slabs Grown from Aluminum Flux

Susan E. Latturner, Daniel Bilc, S. D. Mahanti, Mercouri G Kanatzidis

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

Six new intermetallic aluminum silicides-Gd2PtAl 6Si4, Gd2AuAl6Si4, Tb2PtAl6Si4, Tb2AuAl 6Si4, Dy2PtAl6Si4, and Dy2AuAl6Si4-have been obtained from reactions carried out in aluminum flux. The structure of these compounds was determined by single-crystal X-ray diffraction. They form in space group R3̄m with cell constants of a = 4.1623(3) Å and c = 51.048(5) Å for the Gd2PtAl6Si4 compound. The crystal structure is comprised of hexagonal nets of rare earth atoms alternating with two kinds of layers that have been observed in other multinary aluminide intermetallic compounds (CaAl2Si2 and YNiAl4Ge2). All six RE2MAl6Si4 compounds show antiferromagnetic transitions at low temperatures (TN <20 K); magnetization studies of the Dy compounds show metamagnetic behavior with reorientation of spins at 6000 G. Band structure calculations indicate that the AlSi puckered hexagonal sheets in this structure are electronically distinct from the other surrounding structural motifs.

Original languageEnglish
Pages (from-to)7959-7966
Number of pages8
JournalInorganic Chemistry
Volume42
Issue number24
DOIs
Publication statusPublished - Dec 1 2003

Fingerprint

Aluminum
Intermetallics
intermetallics
slabs
Fluxes
aluminum
Silicides
silicides
Band structure
Rare earths
retraining
Magnetization
rare earth elements
Crystal structure
Single crystals
X ray diffraction
Atoms
magnetization
crystal structure
single crystals

ASJC Scopus subject areas

  • Inorganic Chemistry

Cite this

RE2MAl6Si4 (RE = Gd, Tb, Dy; M = Au, Pt) : Layered Quaternary Intermetallics Featuring CaAl2Si2-Type and YNiAl4Ge2-Type Slabs Grown from Aluminum Flux. / Latturner, Susan E.; Bilc, Daniel; Mahanti, S. D.; Kanatzidis, Mercouri G.

In: Inorganic Chemistry, Vol. 42, No. 24, 01.12.2003, p. 7959-7966.

Research output: Contribution to journalArticle

@article{2d10768177dc436a87de1b2692c45ae0,
title = "RE2MAl6Si4 (RE = Gd, Tb, Dy; M = Au, Pt): Layered Quaternary Intermetallics Featuring CaAl2Si2-Type and YNiAl4Ge2-Type Slabs Grown from Aluminum Flux",
abstract = "Six new intermetallic aluminum silicides-Gd2PtAl 6Si4, Gd2AuAl6Si4, Tb2PtAl6Si4, Tb2AuAl 6Si4, Dy2PtAl6Si4, and Dy2AuAl6Si4-have been obtained from reactions carried out in aluminum flux. The structure of these compounds was determined by single-crystal X-ray diffraction. They form in space group R3̄m with cell constants of a = 4.1623(3) {\AA} and c = 51.048(5) {\AA} for the Gd2PtAl6Si4 compound. The crystal structure is comprised of hexagonal nets of rare earth atoms alternating with two kinds of layers that have been observed in other multinary aluminide intermetallic compounds (CaAl2Si2 and YNiAl4Ge2). All six RE2MAl6Si4 compounds show antiferromagnetic transitions at low temperatures (TN <20 K); magnetization studies of the Dy compounds show metamagnetic behavior with reorientation of spins at 6000 G. Band structure calculations indicate that the AlSi puckered hexagonal sheets in this structure are electronically distinct from the other surrounding structural motifs.",
author = "Latturner, {Susan E.} and Daniel Bilc and Mahanti, {S. D.} and Kanatzidis, {Mercouri G}",
year = "2003",
month = "12",
day = "1",
doi = "10.1021/ic0346432",
language = "English",
volume = "42",
pages = "7959--7966",
journal = "Inorganic Chemistry",
issn = "0020-1669",
publisher = "American Chemical Society",
number = "24",

}

TY - JOUR

T1 - RE2MAl6Si4 (RE = Gd, Tb, Dy; M = Au, Pt)

T2 - Layered Quaternary Intermetallics Featuring CaAl2Si2-Type and YNiAl4Ge2-Type Slabs Grown from Aluminum Flux

AU - Latturner, Susan E.

AU - Bilc, Daniel

AU - Mahanti, S. D.

AU - Kanatzidis, Mercouri G

PY - 2003/12/1

Y1 - 2003/12/1

N2 - Six new intermetallic aluminum silicides-Gd2PtAl 6Si4, Gd2AuAl6Si4, Tb2PtAl6Si4, Tb2AuAl 6Si4, Dy2PtAl6Si4, and Dy2AuAl6Si4-have been obtained from reactions carried out in aluminum flux. The structure of these compounds was determined by single-crystal X-ray diffraction. They form in space group R3̄m with cell constants of a = 4.1623(3) Å and c = 51.048(5) Å for the Gd2PtAl6Si4 compound. The crystal structure is comprised of hexagonal nets of rare earth atoms alternating with two kinds of layers that have been observed in other multinary aluminide intermetallic compounds (CaAl2Si2 and YNiAl4Ge2). All six RE2MAl6Si4 compounds show antiferromagnetic transitions at low temperatures (TN <20 K); magnetization studies of the Dy compounds show metamagnetic behavior with reorientation of spins at 6000 G. Band structure calculations indicate that the AlSi puckered hexagonal sheets in this structure are electronically distinct from the other surrounding structural motifs.

AB - Six new intermetallic aluminum silicides-Gd2PtAl 6Si4, Gd2AuAl6Si4, Tb2PtAl6Si4, Tb2AuAl 6Si4, Dy2PtAl6Si4, and Dy2AuAl6Si4-have been obtained from reactions carried out in aluminum flux. The structure of these compounds was determined by single-crystal X-ray diffraction. They form in space group R3̄m with cell constants of a = 4.1623(3) Å and c = 51.048(5) Å for the Gd2PtAl6Si4 compound. The crystal structure is comprised of hexagonal nets of rare earth atoms alternating with two kinds of layers that have been observed in other multinary aluminide intermetallic compounds (CaAl2Si2 and YNiAl4Ge2). All six RE2MAl6Si4 compounds show antiferromagnetic transitions at low temperatures (TN <20 K); magnetization studies of the Dy compounds show metamagnetic behavior with reorientation of spins at 6000 G. Band structure calculations indicate that the AlSi puckered hexagonal sheets in this structure are electronically distinct from the other surrounding structural motifs.

UR - http://www.scopus.com/inward/record.url?scp=0345448368&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0345448368&partnerID=8YFLogxK

U2 - 10.1021/ic0346432

DO - 10.1021/ic0346432

M3 - Article

VL - 42

SP - 7959

EP - 7966

JO - Inorganic Chemistry

JF - Inorganic Chemistry

SN - 0020-1669

IS - 24

ER -