skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Epitaxial growth and magnetic properties of the first five members of the layered Sr{sub n+1}Ru{sub n}O{sub 3n+1} oxide series

Abstract

Epitaxial thin films of the n=1-5 members of the layered Sr{sub n+1}Ru{sub n}O{sub 3n+1} oxide series were produced by reactive molecular-beam epitaxy. X-ray diffraction and high-resolution transmission electron microscopy confirm that these films are epitaxially oriented and nearly phase pure (>98%). The Sr{sub 2}RuO{sub 4} (n=1) and Sr{sub 3}Ru{sub 2}O{sub 7} (n=2) samples show no ferromagnetic transition in the range from 5 to 300 K, while the Sr{sub 4}Ru{sub 3}O{sub 10} (n=3), Sr{sub 5}Ru{sub 4}O{sub 13} (n=4), and Sr{sub 6}Ru{sub 5}O{sub 16} (n=5) samples show ferromagnetic transitions at 85, 95, and 130 K, respectively.

Authors:
; ; ; ; ; ; ; ; ;  [1];  [2];  [2];  [2]
  1. Department of Materials Science and Engineering, Pennsylvania State University, University Park, Pennsylvania 16802-5005 (United States)
  2. (United States)
Publication Date:
OSTI Identifier:
20883269
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 90; Journal Issue: 2; Other Information: DOI: 10.1063/1.2430941; (c) 2007 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; CRYSTAL GROWTH; FERROMAGNETIC MATERIALS; LAYERS; MAGNETIC PROPERTIES; MOLECULAR BEAM EPITAXY; OXIDES; RUTHENIUM COMPOUNDS; STRONTIUM COMPOUNDS; TEMPERATURE DEPENDENCE; TEMPERATURE RANGE 0000-0013 K; TEMPERATURE RANGE 0013-0065 K; TEMPERATURE RANGE 0065-0273 K; TEMPERATURE RANGE 0273-0400 K; THIN FILMS; TRANSMISSION ELECTRON MICROSCOPY; X-RAY DIFFRACTION

Citation Formats

Tian, W., Haeni, J. H., Schlom, D. G., Hutchinson, E., Sheu, B. L., Rosario, M. M., Schiffer, P., Liu, Y., Zurbuchen, M. A., Pan, X. Q., Department of Physics, Pennsylvania State University, University Park, Pennsylvania 16802, Materials Science Division, Argonne National Laboratory, Argonne, Illinois 60439, and Department of Materials Science and Engineering, University of Michigan, Michigan 48109. Epitaxial growth and magnetic properties of the first five members of the layered Sr{sub n+1}Ru{sub n}O{sub 3n+1} oxide series. United States: N. p., 2007. Web. doi:10.1063/1.2430941.
Tian, W., Haeni, J. H., Schlom, D. G., Hutchinson, E., Sheu, B. L., Rosario, M. M., Schiffer, P., Liu, Y., Zurbuchen, M. A., Pan, X. Q., Department of Physics, Pennsylvania State University, University Park, Pennsylvania 16802, Materials Science Division, Argonne National Laboratory, Argonne, Illinois 60439, & Department of Materials Science and Engineering, University of Michigan, Michigan 48109. Epitaxial growth and magnetic properties of the first five members of the layered Sr{sub n+1}Ru{sub n}O{sub 3n+1} oxide series. United States. doi:10.1063/1.2430941.
Tian, W., Haeni, J. H., Schlom, D. G., Hutchinson, E., Sheu, B. L., Rosario, M. M., Schiffer, P., Liu, Y., Zurbuchen, M. A., Pan, X. Q., Department of Physics, Pennsylvania State University, University Park, Pennsylvania 16802, Materials Science Division, Argonne National Laboratory, Argonne, Illinois 60439, and Department of Materials Science and Engineering, University of Michigan, Michigan 48109. Mon . "Epitaxial growth and magnetic properties of the first five members of the layered Sr{sub n+1}Ru{sub n}O{sub 3n+1} oxide series". United States. doi:10.1063/1.2430941.
@article{osti_20883269,
title = {Epitaxial growth and magnetic properties of the first five members of the layered Sr{sub n+1}Ru{sub n}O{sub 3n+1} oxide series},
author = {Tian, W. and Haeni, J. H. and Schlom, D. G. and Hutchinson, E. and Sheu, B. L. and Rosario, M. M. and Schiffer, P. and Liu, Y. and Zurbuchen, M. A. and Pan, X. Q. and Department of Physics, Pennsylvania State University, University Park, Pennsylvania 16802 and Materials Science Division, Argonne National Laboratory, Argonne, Illinois 60439 and Department of Materials Science and Engineering, University of Michigan, Michigan 48109},
abstractNote = {Epitaxial thin films of the n=1-5 members of the layered Sr{sub n+1}Ru{sub n}O{sub 3n+1} oxide series were produced by reactive molecular-beam epitaxy. X-ray diffraction and high-resolution transmission electron microscopy confirm that these films are epitaxially oriented and nearly phase pure (>98%). The Sr{sub 2}RuO{sub 4} (n=1) and Sr{sub 3}Ru{sub 2}O{sub 7} (n=2) samples show no ferromagnetic transition in the range from 5 to 300 K, while the Sr{sub 4}Ru{sub 3}O{sub 10} (n=3), Sr{sub 5}Ru{sub 4}O{sub 13} (n=4), and Sr{sub 6}Ru{sub 5}O{sub 16} (n=5) samples show ferromagnetic transitions at 85, 95, and 130 K, respectively.},
doi = {10.1063/1.2430941},
journal = {Applied Physics Letters},
number = 2,
volume = 90,
place = {United States},
year = {Mon Jan 08 00:00:00 EST 2007},
month = {Mon Jan 08 00:00:00 EST 2007}
}
  • Roddlesden-Popper homologous series Sr{sub n+1}Co{sub n}O{sub 3n+1} (n=1,2,3,4, and {infinity}) compounds were successfully synthesized by a high pressure and high temperature technique. Structure refinement revealed that these compounds crystallize in tetragonal structures, while the compound n={infinity} is cubic. These compounds are ferromagnetic with the Curie temperature decreasing from 255 K for n=1 to about 200 K for n=2-4 and down to 175 K for SrCoO{sub 3}. Co{sup 4+} ions present as intermediate spin states for n=1-4, but in the low spin state in SrCoO{sub 3}. Negative magnetoresistance was observed for Sr{sub 2}CoO{sub 4} and found to be larger than thatmore » for SrCoO{sub 3}.« less
  • Single crystals of the title compounds were prepared by solid state reactions from barium carbonate and ruthenium metal using a BaBr{sub 2} flux and investigated by X-ray diffraction method using Mo(K{alpha}) radiation and a Charge Coupled Device (CCD) detector. A structural model for the term n=2, Ba{sub 5}Ru{sub 2}Br{sub 2}O{sub 9} (1) was established in the hexagonal symmetry, space group P6{sub 3}/mmc, a=5.8344(2)A, c=25.637(2)A, Z=2. Combined refinement and maximum-entropy method (MEM) unambiguously show the presence of CO{sub 3}{sup 2-} ions in the three other compounds (2, 3, 4). Their crystal structures were solved and refined in the trigonal symmetry, spacemore » group P3-barml, a=5.8381(1)A, c=15.3083(6)A for the term n=3, Ba{sub 6}Ru{sub 3}Br{sub 1.54}(CO{sub 3}){sub 0.23}O{sub 12} (2), and space group R3-barm, a=5.7992(1)A, c=52.866(2)A and a=5.7900(1)A, c=59.819(2)A for the terms n=4, Ba{sub 7}Ru{sub 4}Br{sub 1.46}(CO{sub 3}){sub 0.27}O{sub 15} (3), and n=5, Ba{sub 8}Ru{sub 5}Br{sub 1.64}(CO{sub 3}){sub 0.18}O{sub 18} (4), respectively. The structures are formed by the periodic stacking along [001] of (n+1) hexagonal close-packed [BaO{sub 3}] layers separated by a double layer of composition [Ba{sub 2}Br{sub 2-2x}(CO{sub 3}){sub x}]. The ruthenium atoms occupy the n octahedral interstices created in the hexagonal perovskite slabs and constitute isolated dimers Ru{sub 2}O{sub 9} of face-shared octahedra (FSO) in 1 and isolated trimers Ru{sub 3}O{sub 12} of FSO in 2. In 3 and 4, the Ru{sub 2}O{sub 9} units are connected by corners either directly (3) or through a slab of isolated RuO{sub 6} octahedra (4) to form a bidimensional arrangement of RuO{sub 6} octahedra. These four oxybromocarbonates belong to the family of compounds formulated [Ba{sub 2}Br{sub 2-2x}(CO{sub 3}){sub x}][Ba{sub n+1}Ru{sub n}O{sub 3n+3}] where n represents the thickness of the octahedral string in hexagonal perovskite slabs. These compounds are compared to the oxychloride series.« less
  • Graphical abstract: - Highlights: • High quality epitaxial thin films of layered Ruddlesden–Popper nickelates were prepared. • For the first time this has been achieved by the PLD process. • n = 1, 2 and 3 films were successfully deposited on SrTiO{sub 3} and NdGaO{sub 3} substrates. • c-Axis oriented films were confirmed by XRD analysis. • In-plane and out-of-plane strain effects on lattice are discussed. - Abstract: Layered Ruddlesden–Popper phases of composition La{sub n+1}Ni{sub n}O{sub 3n+1} (n = 1, 2 and 3) have been epitaxially grown on SrTiO{sub 3} (0 0 1) or NdGaO{sub 3} (1 1 0) singlemore » crystal substrates using the pulsed laser deposition technique. X-ray diffraction analyses (θ/2θ, rocking curves, and φ-scans) and atomic force microscopy confirms the high-quality growth of the series of films with low surface roughness values (less than 1 nm). In particular, epitaxial growth of the higher order phases (n = 2 and 3) of lanthanum nickelate have been demonstrated for the first time.« less
  • The authors have discovered three new layered transition-metal oxysulfides; (Cu{sub 2}S{sub 2})(Sr{sub 2}CuO{sub 2}), (Cu{sub 2}S{sub 2})(Sr{sub 2}NiO{sub 2}) and (Cu{sub 2}S{sub 2})(Sr{sub 3}Sc{sub 2}O{sub 5}), whose compositions are generally formulated as (Cu{sub 2}S{sub 2})(Sr{sub n+1}M{sub n}O{sub 3n{minus}1}). Their structures consist of alternate stackings of perovskite-based MO{sub 2} plane(s) and Cu{sub 2}S{sub 2} layers, showing great similarity to cuprate superconductors when the Cu{sub 2}S{sub 2} layer is considered as the blocking layer. The formation of these phases is limited by the ion size of M and elasticity of the Cu{sub 2}S{sub 2} layer. The newly found (Cu{sub 2}S{sub 2})(Sr{sub 2}CuO{submore » 2}) possesses the horizontally extended tetragonal CuO{sub 2} plane, making itself a possible candidate for a new superconductor.« less
  • We have grown epitaxial (Sr,Ba) (n+1)Ru(n)O(3n+1) films, n = 1, 2, and infinity, by pulsed laser deposition (PLD) and controlled their orientation by choosing appropriate substrates. The growth conditions yielding phase pure films have been mapped out. Resistivity versus temperature measurements show that both a and c axis films of Sr2RuO4 are metallic, but not superconducting. The latter is probably due to the presence of low-level impurities that are difficult to avoid given the target preparation process involved in growing these films by PLD.