TY - JOUR
T1 - Hf3Fe4Sn4 and Hf9Fe4-xSn10+x
T2 - Two stannide intermetallics with low-dimensional iron sublattices
AU - Calta, Nicholas P.
AU - Kanatzidis, Mercouri G.
N1 - Funding Information:
This work made use of the EPIC facility (NU ANCE Center-Northwestern University), which has received support from the MRSEC program ( NSF DMR-1121262 ) at the Materials Research Center; the International Institute for Nanotechnology (IIN); and the State of Illinois, through the IIN. The work at Argonne National Laboratory was supported by the U.S. Department of Energy , Office of Science, Materials Sciences and Engineering. We acknowledge Prof. Danna Freedman and Samantha Clarke for assistance with magnetic measurements, which were supported by Northwestern University’s International Institute for Nanotechnology and the State of Illinois Department of Commerce and Economic Opportunity ( DCEO ) Award ( 10-203031 ).
PY - 2016/4/1
Y1 - 2016/4/1
N2 - This article reports two new Hf-rich intermetallics synthesized using Sn flux: Hf3Fe4Sn4 and Hf9Fe4-xSn10+x. Hf3Fe4Sn4 adopts an ordered variant the Hf3Cu8 structure type in orthorhombic space group Pnma with unit cell edges of a=8.1143(5) Å, b=8.8466(5) Å, and c=10.6069(6) Å. Hf9Fe4-xSn10+x, on the other hand, adopts a new structure type in Cmc21 with unit cell edges of a=5.6458(3) Å, b=35.796(2) Å, and c=8.88725(9) Å for x=0. It exhibits a small amount of phase width in which Sn substitutes on one of the Fe sites. Both structures are fully three-dimensional and are characterized by pseudo one- and two-dimensional networks of Fe-Fe homoatomic bonding. Hf9Fe4-xSn10+x exhibits antiferromagnetic order at TN=46(2) K and its electrical transport behavior indicates that it is a normal metal with phonon-dictated resistivity. Hf3Fe4Sn4 is also an antiferromagnet with a rather high ordering temperature of TN=373(5) K. Single crystal resistivity measurements indicate that Hf3Fe4Sn4 behaves as a Fermi liquid at low temperatures, indicating strong electron correlation.
AB - This article reports two new Hf-rich intermetallics synthesized using Sn flux: Hf3Fe4Sn4 and Hf9Fe4-xSn10+x. Hf3Fe4Sn4 adopts an ordered variant the Hf3Cu8 structure type in orthorhombic space group Pnma with unit cell edges of a=8.1143(5) Å, b=8.8466(5) Å, and c=10.6069(6) Å. Hf9Fe4-xSn10+x, on the other hand, adopts a new structure type in Cmc21 with unit cell edges of a=5.6458(3) Å, b=35.796(2) Å, and c=8.88725(9) Å for x=0. It exhibits a small amount of phase width in which Sn substitutes on one of the Fe sites. Both structures are fully three-dimensional and are characterized by pseudo one- and two-dimensional networks of Fe-Fe homoatomic bonding. Hf9Fe4-xSn10+x exhibits antiferromagnetic order at TN=46(2) K and its electrical transport behavior indicates that it is a normal metal with phonon-dictated resistivity. Hf3Fe4Sn4 is also an antiferromagnet with a rather high ordering temperature of TN=373(5) K. Single crystal resistivity measurements indicate that Hf3Fe4Sn4 behaves as a Fermi liquid at low temperatures, indicating strong electron correlation.
KW - Flux synthesis
KW - Intermetallic compounds
KW - Magnetism
KW - X-ray crystallography
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U2 - 10.1016/j.jssc.2015.12.017
DO - 10.1016/j.jssc.2015.12.017
M3 - Article
AN - SCOPUS:84961182000
VL - 236
SP - 130
EP - 137
JO - Journal of Solid State Chemistry
JF - Journal of Solid State Chemistry
SN - 0022-4596
ER -