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Title: Thin films sputtered from Ba{sub 2}NdFeNb{sub 4}O{sub 15} multiferroic targets on BaFe{sub 12}O{sub 19} coated substrates

Abstract

Highlights: • Synthesis of Ba{sub 2}NdFeNb{sub 4}O{sub 15}/BaFe{sub 12}O{sub 19} (BaM) heterostructures by RF magnetron sputtering. • Growth of TTB layer were retained regardless of the underlayer (Pt bottom electrode or BaM). • Dielectric and magnetic properties were obtained from the Pt/TTB/BaM/Pt stacks. - Abstract: Ba{sub 2}NdFeNb{sub 4}O{sub 15} tetragonal tungsten bronze (TTB)/BaFe{sub 12}O{sub 19} (BaM) hexaferrite bilayers have been grown by RF magnetron sputtering on Pt/TiO{sub 2}/SiO{sub 2}/Si (PtS) substrates. The BaM layer is textured along (0 0 1) while the TTB layer is multioriented regardless of the PtS or BaM/PtS substrate. Dielectric properties of TTB films are similar to those of bulk, i.e., ε ∼ 150 and a magnetic hysteresis loop is obtained from TTB/BaM bilayers, thanks to the BaM component. This demonstrates the possibility of transferring to 2 dimensional structures the composite multiferroic system TTB/BaM previously identified in 3 dimensional bulk ceramics.

Authors:
 [1];  [2];  [1];  [2]; ;  [1];  [2]
  1. CNRS, ICMCB, UPR 9048, F-33600 Pessac (France)
  2. (France)
Publication Date:
OSTI Identifier:
22581619
Resource Type:
Journal Article
Resource Relation:
Journal Name: Materials Research Bulletin; Journal Volume: 81; Other Information: Copyright (c) 2016 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; BARIUM COMPOUNDS; CERAMICS; DIELECTRIC MATERIALS; DIELECTRIC PROPERTIES; FERRATES; HYSTERESIS; IMPEDANCE; LAYERS; MAGNETIC PROPERTIES; NEODYMIUM COMPOUNDS; NIOBATES; SILICON OXIDES; SPECTROSCOPY; SPUTTERING; SUBSTRATES; SYNTHESIS; TETRAGONAL LATTICES; THIN FILMS; TITANIUM OXIDES; TUNGSTEN BRONZE

Citation Formats

Bodeux, Romain, Univ. Bordeaux, ICMCB, UPR 9048, F-33600 Pessac, Michau, Dominique, E-mail: dominique.michau@icmcb.cnrs.fr, Univ. Bordeaux, ICMCB, UPR 9048, F-33600 Pessac, Maglione, Mario, Josse, Michaël, and Univ. Bordeaux, ICMCB, UPR 9048, F-33600 Pessac. Thin films sputtered from Ba{sub 2}NdFeNb{sub 4}O{sub 15} multiferroic targets on BaFe{sub 12}O{sub 19} coated substrates. United States: N. p., 2016. Web. doi:10.1016/J.MATERRESBULL.2016.04.027.
Bodeux, Romain, Univ. Bordeaux, ICMCB, UPR 9048, F-33600 Pessac, Michau, Dominique, E-mail: dominique.michau@icmcb.cnrs.fr, Univ. Bordeaux, ICMCB, UPR 9048, F-33600 Pessac, Maglione, Mario, Josse, Michaël, & Univ. Bordeaux, ICMCB, UPR 9048, F-33600 Pessac. Thin films sputtered from Ba{sub 2}NdFeNb{sub 4}O{sub 15} multiferroic targets on BaFe{sub 12}O{sub 19} coated substrates. United States. doi:10.1016/J.MATERRESBULL.2016.04.027.
Bodeux, Romain, Univ. Bordeaux, ICMCB, UPR 9048, F-33600 Pessac, Michau, Dominique, E-mail: dominique.michau@icmcb.cnrs.fr, Univ. Bordeaux, ICMCB, UPR 9048, F-33600 Pessac, Maglione, Mario, Josse, Michaël, and Univ. Bordeaux, ICMCB, UPR 9048, F-33600 Pessac. Thu . "Thin films sputtered from Ba{sub 2}NdFeNb{sub 4}O{sub 15} multiferroic targets on BaFe{sub 12}O{sub 19} coated substrates". United States. doi:10.1016/J.MATERRESBULL.2016.04.027.
@article{osti_22581619,
title = {Thin films sputtered from Ba{sub 2}NdFeNb{sub 4}O{sub 15} multiferroic targets on BaFe{sub 12}O{sub 19} coated substrates},
author = {Bodeux, Romain and Univ. Bordeaux, ICMCB, UPR 9048, F-33600 Pessac and Michau, Dominique, E-mail: dominique.michau@icmcb.cnrs.fr and Univ. Bordeaux, ICMCB, UPR 9048, F-33600 Pessac and Maglione, Mario and Josse, Michaël and Univ. Bordeaux, ICMCB, UPR 9048, F-33600 Pessac},
abstractNote = {Highlights: • Synthesis of Ba{sub 2}NdFeNb{sub 4}O{sub 15}/BaFe{sub 12}O{sub 19} (BaM) heterostructures by RF magnetron sputtering. • Growth of TTB layer were retained regardless of the underlayer (Pt bottom electrode or BaM). • Dielectric and magnetic properties were obtained from the Pt/TTB/BaM/Pt stacks. - Abstract: Ba{sub 2}NdFeNb{sub 4}O{sub 15} tetragonal tungsten bronze (TTB)/BaFe{sub 12}O{sub 19} (BaM) hexaferrite bilayers have been grown by RF magnetron sputtering on Pt/TiO{sub 2}/SiO{sub 2}/Si (PtS) substrates. The BaM layer is textured along (0 0 1) while the TTB layer is multioriented regardless of the PtS or BaM/PtS substrate. Dielectric properties of TTB films are similar to those of bulk, i.e., ε ∼ 150 and a magnetic hysteresis loop is obtained from TTB/BaM bilayers, thanks to the BaM component. This demonstrates the possibility of transferring to 2 dimensional structures the composite multiferroic system TTB/BaM previously identified in 3 dimensional bulk ceramics.},
doi = {10.1016/J.MATERRESBULL.2016.04.027},
journal = {Materials Research Bulletin},
number = ,
volume = 81,
place = {United States},
year = {Thu Sep 15 00:00:00 EDT 2016},
month = {Thu Sep 15 00:00:00 EDT 2016}
}
  • Single phase Tl{sub 2}Ba{sub 2}CaCu{sub 2}O{sub 8} thin films have been deposited on single-crystal LaAlO{sub 3} substrates, (100) orientation, via a two-step deposition process. First, Ba-Ca-Cu-O precursor films were deposited by metalorganic chemical vapor deposition (MOCVD) using barium, calcium, and copper-tetramethyl-heptanedionate, (tmhd){sub 2}, source materials under reduced pressure in an oxygen/argon atmosphere. Substrate temperatures were between 500 and 600 {degree}C. Thallium was then incorporated by heating the films in a confined surface configuration with an unfired pellet of Tl{sub 2}Ba{sub 2}CaCu{sub 2}O{sub {ital x}} composition at 870 {degree}C for 0.1 h. The resultant films (0.5--1 {mu}m thick) showed a preferredmore » orientation with the {ital c} axis normal to the substrate. The superconducting properties were characterized by resistance and mutual inductance versus temperature and by critical current measurements. Zero resistance temperatures as high as 98 K and {ital J}{sub {ital c}} values close to 1{times}10{sup 4} A/cm{sup 2} at 77 K were observed.« less
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  • Attempts to identify intermediates in a solution route to thin films of the high-temperature superconductor YBa{sub 2}Cu{sub 3}O{sub 7} have led to the isolation of the mixed-metal cluster Ba{sub 2}Cu{sub 2}(OR){sub 4}(acac){sub 4}{center dot}2HOR (R = CH{sub 2}CH{sub 2}OCH{sub 3}) (1). This compound, which is the first example of a molecular barium-copper cluster, was isolated from the reaction of the copper dimer ((acac)Cu(OCH{sub 2}CH{sub 2}OCH{sub 3})){sub 2} with barium 2-methoxyethoxide, the first stage in the preparation of the thin-film precursor solution. Crystallographic data for 1 are as follows: formula = Ba{sub 2}Cu{sub 2}O{sub 20}C{sub 38}H{sub 72}, FW = 1250.5 g/mol,more » D{sub x} = 1.57 g/cm{sup 3}, space group = P{bar 1}, a = 10.797 (3) {angstrom}, b = 11.269 (1) {angstrom}, c = 12.109 (1) {angstrom}, {alpha} = 106.18 (1){degree}, {beta} = 100.93 (2){degree}, {gamma} = 102.98 (2){degree}, Z = 1, R = 0.031 for 4059 reflections with I {ge} 2{sigma}(I) and 2{theta}{le}50{degree}. Thin films prepared from this route showed superconducting transition temperatures of 85 K, only small amounts of impurity phases by X-ray powder diffraction, and {le} 0.1 atom % carbon as determined by nuclear reaction analysis.« less
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