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Structure and Magnetic Properties of Ce3(Ni/Al/Ga)11—A New Phase with the La3Al11 Structure Type

by Oliver Janka 1,2,*,†, Tian Shang 3,4,†, Ryan E. Baumbach 3,5,†, Eric D. Bauer 3,†, Joe D. Thompson 3,† and Susan M. Kauzlarich 1,*,†
Department of Chemistry, University of California, Davis, CA 95616, USA
Institut für Anorganische und Analytische Chemie, Westfälische Wilhelms-Universität, 48149 Münster, Germany
Los Alamos National Laboratory, Los Alamos, NM 87545, USA
Center for Correlated Matter and Department of Physics, Zhejiang University, Hangzhou, 310027 Zhejiang, China
National High Magnetic Field Laboratory, Florida State University, Tallahassee, FL 32310, USA
Authors to whom correspondence should be addressed.
These authors contributed equally to this work.
Academic Editor: Shujun Zhang
Crystals 2015, 5(1), 1-8;
Received: 13 November 2014 / Accepted: 18 December 2014 / Published: 29 December 2014
Single crystals of Ce3(Ni/Al/Ga)11 were obtained from an Al flux reaction. Single crystals of the title compound crystallizing in the orthorhombic space group Immm (No. 71, Z = 2) with a = 436.38(14), b = 1004.5(3) and c = 1293.4(4) pm. This is a standardized unit cell of the previously published La3Al11 structure type. Wavelength dispersive microprobe provides the composition of Ce3.11(1)Ni0.03(1)Al8.95(1)Ga1.90(1). Single crystal refinement provides the composition Ce3Ni0.08Al9.13Ga1.78 with substitution of the Ni and Ga on the Al1 and Al4 sites with the Al2 and Al3 solely occupied by Al. Magnetic susceptibility measurements reveal antiferromagnetic ordering with TN = 4.8 K and there is no evidence for a ferromagnetic ordering that has been reported for Ce3Al11. The effective magnetic moment was found to be μeff = 1.9μB/Ce, which is lower than the expected value for trivalent Ce (2.54μB/Ce). View Full-Text
Keywords: cerium; single crystal; magnetism; aluminum cerium; single crystal; magnetism; aluminum
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Janka, O.; Shang, T.; Baumbach, R.E.; Bauer, E.D.; Thompson, J.D.; Kauzlarich, S.M. Structure and Magnetic Properties of Ce3(Ni/Al/Ga)11—A New Phase with the La3Al11 Structure Type. Crystals 2015, 5, 1-8.

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