Emergence of Room-Temperature Magnetic Ordering in Artificially Fabricated Ordered-Double-Perovskite Sr2FeRuO6

2011 ◽  
Vol 23 (11) ◽  
pp. 2693-2696 ◽  
Author(s):  
Jaewan Chang ◽  
Kyujoon Lee ◽  
Myung Hwa Jung ◽  
Ji-Hwan Kwon ◽  
Miyoung Kim ◽  
...  
Keyword(s):  
Room Temperature ◽  
Magnetic Ordering ◽  
Double Perovskite

ChemInform Abstract: Emergence of Room-Temperature Magnetic Ordering in Artificially Fabricated Ordered-Double-Perovskite Sr2FeRuO6.

ChemInform ◽  
2011 ◽  
Vol 42 (35) ◽  
pp. no-no
Author(s):  
Jaewan Chang ◽  
Kyujoon Lee ◽  
Myung Hwa Jung ◽  
Ji-Hwan Kwon ◽  
Miyoung Kim ◽  
...  
Keyword(s):  
Room Temperature ◽  
Magnetic Ordering ◽  
Double Perovskite

scholarly journals Epitaxial thin films of multiferroic Bi2FeCrO6 with B-site cationic order

2007 ◽  
Vol 22 (8) ◽  
pp. 2102-2110 ◽  
Author(s):  
Riad Nechache ◽  
Louis-Philippe Carignan ◽  
Lina Gunawan ◽  
Catalin Harnagea ◽  
Gianluigi A. Botton ◽  
...  
Keyword(s):  
Thin Films ◽  
Magnetic Properties ◽  
Room Temperature ◽  
Magnetic Ordering ◽  
Double Perovskite ◽  
Orientation Dependence ◽  
Cation Ordering ◽  
Epitaxial Thin Films ◽  
Transmission Electron Microscopy Analysis ◽  
Electron Microscopy Analysis

Epitaxial thin films of Bi2FeCrO6 (BFCO) have been synthesized by pulsed laser deposition on SrRuO3 on (100)- and (111)-oriented SrTiO3 substrates. Detailed x-ray diffraction and cross-section transmission electron microscopy analysis revealed a double perovskite crystal structure of the BFCO epitaxial films very similar to that of BiFeO3 along with a particularly noteworthy Fe3+/Cr3+ cation ordering along the [111] direction. The films contain no detectable magnetic iron oxide impurities and have the correct cationic average stoichiometry throughout their thickness. They however exhibit a slight modulation in the Fe and Cr compositions forming complementary stripe patterns, suggesting minor local excess or depletion of Fe and Cr. The epitaxial BFCO films exhibit good ferroelectric and piezoelectric properties, in addition to magnetic properties at room temperature, as well as an unexpected crystallographic orientation dependence of their room-temperature magnetic properties. Our results qualitatively confirm the predictions made using the ab initio calculations: the double perovskite structure of BFCO films exhibit a Fe3+/Cr3+ cation ordering and good multiferroic properties, along with the unpredicted existence of magnetic ordering at room temperature.

Molecule-Based Magnets—An Overview

MRS Bulletin ◽  
2000 ◽  
Vol 25 (11) ◽  
pp. 21-30 ◽  
Author(s):  
Joel S. Miller ◽  
Arthur J. Epstein
Keyword(s):  
Low Temperature ◽  
Vapor Deposition ◽  
Room Temperature ◽  
Chemical Vapor ◽  
Magnetic Ordering ◽  
Low Density ◽  
Materials Properties ◽  
The Common ◽  
New Processing ◽  
Very High

Molecule-based magnets are a broad, emerging class of magnetic materials that expand the materials properties typically associated with magnets to include low density, transparency, electrical insulation, and low-temperature fabrication, as well as combine magnetic ordering with other properties such as photoresponsiveness. Essentially all of the common magnetic phenomena associated with conventional transition-metal and rare-earth-based magnets can be found in molecule-based magnets. Although discovered less than two decades ago, magnets with ordering temperatures exceeding room temperature, very high (∼27.0 kOe or 2.16 MA/m) and very low (several Oe or less) coercivities, and substantial remanent and saturation magnetizations have been achieved. In addition, exotic phenomena including photoresponsiveness have been reported. The advent of molecule-based magnets offers new processing opportunities. For example, thin-film magnets can be prepared by means of low-temperature chemical vapor deposition and electrodeposition methods.

Magnetic Ordering in Relation to the Room-Temperature Magnetoelectric Effect ofSr3Co2Fe24O41

2011 ◽  
Vol 106 (8) ◽  
Author(s):  
Minoru Soda ◽  
Taishi Ishikura ◽  
Hiroyuki Nakamura ◽  
Yusuke Wakabayashi ◽  
Tsuyoshi Kimura
Keyword(s):  
Room Temperature ◽  
Magnetoelectric Effect ◽  
Magnetic Ordering

Synthesis and characterisation of the crystal structure and magnetic ordering of double perovskite La3Co2MoO9

2021 ◽  
pp. 125604
Author(s):  
Gennady V. Bazuev ◽  
Alexander E. Teplykh ◽  
Alexander V. Korolev ◽  
Evgeny G. Gerasimov ◽  
Pavel B. Terentev
Keyword(s):  
Crystal Structure ◽  
Magnetic Ordering ◽  
Double Perovskite

Concentration Dependence of Room Temperature Magnetic Ordering in Dilute Fe: Ge1 − x Te x Alloy

2005 ◽  
Vol 160 (1-4) ◽  
pp. 241-246 ◽  
Author(s):  
D. R. S. Somayajulu ◽  
Narendra Patel ◽  
Mukesh Chawda ◽  
Mitesh Sarkar ◽  
K. C. Sebastian
Keyword(s):  
Concentration Dependence ◽  
Room Temperature ◽  
Magnetic Ordering

scholarly journals Análisis cristalográfico, morfológico, eléctrico, óptico y magnético del nuevo material Dy2BiFeO6

2018 ◽  
Vol 9 (1) ◽  
Author(s):  
Jairo Roa-Rojas
Keyword(s):  
Dielectric Constant ◽  
Energy Gap ◽  
Magnetic Hysteresis ◽  
Magnetic Ordering ◽  
Relative Dielectric Constant ◽  
Double Perovskite ◽  
Crystallographic Analysis ◽  
Weiss Temperature ◽  
Constant E ◽  
Diffraction Patterns

We report structural analysis, surface morphology, magnetic ordering, dielectric response, optical feature and the electronic structure of the Dy2BiFeO6 novel complex perovskite. The samples were produced by the standard solid-state reaction recipe. Crystallographic analysis was performed by Rietveld refinement of experimental X-ray diffraction patterns. Results show that this material crystallizes in a perovskite with orthorhombic structure, which corresponds to the Pnma (#62) space group. From the Curie-Weiss fitting on the curve of susceptibility as a function of temperature we establish that the ordering corresponds to a paramagnetic-antiferromagnetic transition, with a Weiss temperature q=-18,5 K, which is compatible with the behavior of the inverse of susceptibility as a function of temperature, and a Néel temperatura TN=50,8 K. The Curie constant allowed for us to obtain an effective magnetic moment of 15,7 mB. The result of magnetization as a function of the applied field, measured at T=50 K, shows a magnetic hysteresis behavior that corroborate the magnetic ordering present for this temperature value. Measurements of the dielectric constant as a function of applied frequencies at room temperature give as a result a high relative dielectric constant (e=780). The reflectance curve as a function of the wavelength reveals the typical behavior of a double perovskite-like material and permits to obtain the energy gap 2,74 eV, which is characteristic of a semiconductor material.

scholarly journals Ferromagnetic Insulators: Room-Temperature Ferromagnetic Insulating State in Cation-Ordered Double-Perovskite Sr2 Fe1+ x Re1− x O6 Films (Adv. Mater. 4/2019)

2019 ◽  
Vol 31 (4) ◽  
pp. 1970021
Author(s):  
Changhee Sohn ◽  
Elizabeth Skoropata ◽  
Yongseong Choi ◽  
Xiang Gao ◽  
Ankur Rastogi ◽  
...  
Keyword(s):  
Room Temperature ◽  
Double Perovskite
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