Crystal growth and magnetic behavior of R{sub 6}T{sub 13-x}Al{sub x}M{sub y} phases (R=La, Nd; T=Mn, Fe; M=main group) grown from lanthanide-rich eutectic fluxes

Journal Article · Sun Nov 15 00:00:00 EST 2009 · Journal of Solid State Chemistry

DOI:https://doi.org/10.1016/j.jssc.2009.08.011· OSTI ID:21372385

Benbow, Evan M., E-mail: [e-mail] ^[1]; Dalal, Naresh S., E-mail: [e-mail] ^[1]; Latturner, Susan E., E-mail: [e-mail] ^[1]

---

1. Department of Chemistry and Biochemistry, Florida State University, Tallahassee, FL 32306 (United States)

Binary eutectic mixtures of early lanthanide metals and late transition metals have been explored as media for crystal growth of new intermetallic phases. A large family of R{sub 6}T{sub 13-x}Al{sub x}M{sub y} phases (R=La or Nd; T=Fe or Mn; M=main group elements) with the La{sub 6}Co{sub 11}Ga{sub 3} structure type can be crystallized from La/Ni and Nd/Fe eutectics. The tetragonal structure of these compounds features slabs of transition metal atoms capped with mixed T/Al sites and separated by layers of lanthanide ions. The growth of large crystals of the lanthanum analogs allows for the study of the anisotropic magnetic properties of the transition metal slabs. For La{sub 6}Fe{sub 13-x}Al{sub x}M{sub y} analogs, these order antiferromagnetically with T{sub N} strongly dependent on the Fe/Al ratio on the mixed sites. Growth of Mn analogs is reported for the first time; the transition metal slabs in La{sub 6}(Mn/Ni){sub 10}Al{sub 3} phases order ferromagnetically with a T{sub C} of 200 K. - Graphical abstract: R{sub 6}T{sub 13-x}Al{sub x}M{sub y} phases with the La{sub 6}Co{sub 11}Ga{sub 3} structure type crystallize from La/Ni and Nd/Fe eutectics. Transition metal slabs in La{sub 6}Fe{sub 13-x}Al{sub x}M{sub y} and La{sub 6}(Mn/Ni){sub 10}Al{sub 3} order antiferromagnetically (T{sub N} 150 K) and ferromagnetically (T{sub C} 200 K), respectively.

• OSTI ID: 21372385
• Journal Information: Journal of Solid State Chemistry, Vol. 182, Issue 11; Other Information: DOI: 10.1016/j.jssc.2009.08.011; PII: S0022-4596(09)00393-4; Copyright (c) 2009 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; ISSN 0022-4596
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ALUMINIUM ALLOYS
ANISOTROPY
ANTIFERROMAGNETISM
CRYSTAL GROWTH
EUTECTICS
FLUX SYNTHESIS
GALLIUM ALLOYS
IRON
IRON ALLOYS
LANTHANUM ALLOYS
LAYERS
MAGNETIC PROPERTIES
MANGANESE ALLOYS
NEODYMIUM ALLOYS
SLABS
TEMPERATURE RANGE 0065-0273 K
ALLOYS
ELEMENTS
MAGNETISM
METALS
PHYSICAL PROPERTIES
RARE EARTH ALLOYS
TEMPERATURE RANGE
TRANSITION ELEMENT ALLOYS
TRANSITION ELEMENTS