The new ternary pnictides Er{sub 12}Ni{sub 30}P{sub 21} and Er{sub 13}Ni{sub 25}As{sub 19}: Crystal structures and magnetic properties

Journal Article · Mon Nov 15 00:00:00 EST 2010 · Journal of Solid State Chemistry

DOI:https://doi.org/10.1016/j.jssc.2010.08.021· OSTI ID:21494108

Oryshchyn, Stepan ^[1]; Babizhetskyy, Volodymyr ^[2]; Zhak, Olga ^[1]; Zelinska, Mariya ^[1]; Pivan, Jean-Yves ^[3]; Duppel, Viola; Simon, Arndt ^[2]; Kienle, Lorenz ^[4]

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1. Department of Analytical Chemistry, Ivan Franko National University of Lviv, Kyryla and Mefodija Str. 6, 79005 Lviv (Ukraine)
2. Max-Planck-Institut fuer Festkoerperforschung, Heisenbergstrasse 1, Postfach 800665, D-70569 Stuttgart (Germany)
3. Sciences Chimiques de Rennes UMR CNRS 6226, Universite de Rennes 1 - ENSCR, Campus de Beaulieu, Avenue du General Leclerc, 35042 Rennes Cedex (France)
4. Institute for Materials Science, Synthesis and Real Structure, Christian Albrechts University Kiel, Kaiserstr. 2, D-24143 Kiel (Germany)

The new ternary pnictides Er{sub 12}Ni{sub 30}P{sub 21} and Er{sub 13}Ni{sub 25}As{sub 19} have been synthesized from the elements. They crystallize with hexagonal structures determined from single-crystal X-ray data for Er{sub 12}Ni{sub 30}P{sub 21} (space group P6{sub 3}/m, a=1.63900(3) nm, c=0.37573(1) nm, Z=1, R{sub F}=0.062 for 1574 F-values and 74 variable parameters), and for Er{sub 13}Ni{sub 25}As{sub 19} (Tm{sub 13}Ni{sub 25}As{sub 19}-type structure, space group P6-bar , a=1.6208(1) nm, c=0.38847(2) nm, Z=1, R{sub F}=0.026 for 1549 F-values and 116 variable parameters). These compounds belong to a large family of hexagonal structures with a metal-metalloid ratio of 2:1. HRTEM investigations were conducted to probe for local ordering of the disordered structure at the nanoscale. The magnetic properties of the phosphide Er{sub 12}Ni{sub 30}P{sub 21} have been studied in the temperature of range 2<T<300 K and with applied fields up to 5 T. The magnetic susceptibility follows the Curie-Weiss law from 4 to 300 K. The measured value of {mu}{sub eff}=9.59 {mu}{sub B} corresponds to the theoretical value of Er{sup 3+}. - Graphical abstract: The new ternary pnictides Er{sub 12}Ni{sub 30}P{sub 21} and Er{sub 13}Ni{sub 25}As{sub 19} have been synthesized from the elements. They crystallize with hexagonal structures determined from single-crystal X-ray data. The compounds belong to a large family of structures with a metal-metalloid ratio of 2:1. HRTEM investigations were conducted to probe for local ordering of the disordered structure at the nanoscale. Display Omitted

• OSTI ID: 21494108
• Journal Information: Journal of Solid State Chemistry, Vol. 183, Issue 11; Other Information: DOI: 10.1016/j.jssc.2010.08.021; PII: S0022-4596(10)00355-5; Copyright (c) 2010 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
ARSENIDES
CURIE-WEISS LAW
ERBIUM COMPOUNDS
ERBIUM IONS
HEXAGONAL LATTICES
MAGNETIC SUSCEPTIBILITY
MONOCRYSTALS
NANOSTRUCTURES
PHOSPHIDES
SPACE GROUPS
THULIUM COMPOUNDS
TRANSMISSION ELECTRON MICROSCOPY
ARSENIC COMPOUNDS
CHARGED PARTICLES
CRYSTAL LATTICES
CRYSTAL STRUCTURE
CRYSTALS
ELECTRON MICROSCOPY
IONS
MAGNETIC PROPERTIES
MICROSCOPY
PHOSPHORUS COMPOUNDS
PHYSICAL PROPERTIES
PNICTIDES
RARE EARTH COMPOUNDS
SYMMETRY GROUPS