ChemInform Abstract: Room Temperature Magnetic Rare-Earth Iron Garnet Thin Films with Ordered Mesoporous Structure.

ChemInform ◽  
2013 ◽  
Vol 44 (35) ◽  
pp. no-no
Author(s):  
Christian Suchomski ◽  
Christian Reitz ◽  
Celia T. Sousa ◽  
Joao P. Araujo ◽  
Torsten Brezesinski
2013 ◽  
Vol 25 (12) ◽  
pp. 2527-2537 ◽  
Author(s):  
Christian Suchomski ◽  
Christian Reitz ◽  
Celia T. Sousa ◽  
Joao P. Araujo ◽  
Torsten Brezesinski

2016 ◽  
Vol 4 (38) ◽  
pp. 8889-8896 ◽  
Author(s):  
Christian Reitz ◽  
Christian Suchomski ◽  
Di Wang ◽  
Horst Hahn ◽  
Torsten Brezesinski

Topotactic Li insertion into polymer-templated mesostructured α-LiFe5O8 thin films allows for the intriguing possibility of tuning the magnetization at room temperature.


2019 ◽  
Vol 114 (10) ◽  
pp. 102401 ◽  
Author(s):  
Mahendra DC ◽  
Tao Liu ◽  
Jun-Yang Chen ◽  
Thomas Peterson ◽  
Protyush Sahu ◽  
...  

Author(s):  
B. M. Simion ◽  
R. Ramesh ◽  
E. Marinero ◽  
R. L. Pfeffer ◽  
G. Thomas

The continuous demands of the computer industry for increased reliability, portability, and density of storage media, has opened a new chapter in the magnetic recording research, by focusing on the viability of magneto-optical materials for storage. Several materials are considered presently to be at the forefront of this new quest: ternary rare-earth transition-metal alloys (such as GdTbFe or TbFeCo), garnets, and Co/Pt or Co/Pd mutilayers. Of these, the ferrimagnetic garnets, due to their relatively flexible structure, may accommodate a large number of substituting ions, allowing thus for a very good control of their magnetic and magneto-optical properties. The good results obtained during thegrowth of epitaxial superconducting oxide thin films by pulsed laser deposition (PLD), has encouragedus to try this novel deposition technique in the growth of multilayered heteroepitaxial ferrimagneticiron garnet thin films.Superlattice heterostructures consisting of alternating single crystalline ferrimagnetic yttrium-iron-garnet (YIG) and bismuth-iron-garnet (BIG) thin film layers, as well as alternating YIG and europiumsubstituted BIG (EBIG), were deposited on single crystalline (111) paramagnetic gadolinium-galliumgarnet (GGG) substrates.


1996 ◽  
Vol 4 (6) ◽  
pp. 22-23
Author(s):  
J. M. Claude ◽  
J. F. Thiot ◽  
V. Oderno ◽  
C. Dufour

The Rare-Earth Laves phases RE-Fe2 (RE represent the Rare-Earth) show large magnetostrictive properties, especially at room temperature. These materials are well characterized when in bulk form, but they have rarely been studied as thin films and one can expect some important effects due to epitaxial growth.A few single crystal layers of RE-Fe2 have been studied (YFe2, TbFe2, DyFe2, ErFe2: and Dy0.7Tb0.3Fe2 known as Terfenol-D). The thickness of these different layers are between 5 and 20 nm and with [110] as a growth direction have been epitaxied. They have been deposited with a Molecular Beam Epitaxy (MBE) in an ultra high vacuum chamber. A [1120] sapphire substrate is recovered by a [110] niobium buffer. The RE and the iron are then co-deposited on the substrate which is maintained at 500°C. Lastly, an Yttrium layer is deposited on the Rare Earth material at a temperature close to ambient.


2001 ◽  
Vol 79 (13) ◽  
pp. 1962-1964 ◽  
Author(s):  
D. S. Lee ◽  
A. J. Steckl

2007 ◽  
Vol 1032 ◽  
Author(s):  
Ram Gupta ◽  
D. Brown ◽  
K. Ghosh ◽  
S. R. Mishra ◽  
P. K. Kahol

AbstractDilute Magnetic Semiconductors (DMS) are a rare group of promising materials that utilize both the electronic charge - a characteristic of semiconductor materials - and the electronic spin - a characteristic of magnetic materials. Oxide based DMS show promise of ferromagnetism (FM) at room temperature. It has been found that doping metal oxides such as ZnO, TiO2, and In2O3 with magnetic ions such as Fe, Co, Mn, and Cr produces DMS, which exhibit FM above room temperature. In2O3, a transparent opto-electronic material, is an interesting prospect for spintronics due to a unique combination of magnetic, electrical, and optical properties. High quality thin films of rare earth magnetic gadolinium (Gd) doped oxide-based DMS materials have been grown by pulsed laser deposition (PLD) technique on various substrates such as single crystal of sapphire (001) and quartz under suitable growth conditions of substrate temperature and oxygen pressure in the PLD chamber. The effect of rare earth magnetic doping on the structural and electro - magnetic properties of these films has been studied using Raman Spectroscopy, X-Ray Diffraction, Scanning Electron Microscopy, and Magneto - Transport. An X- ray diffraction study reveals that these films are single phase and highly oriented. Characteristic Raman peaks typical of indium oxide are observed at 496 and 627 cm−1. We have observed high magnetoresistance (∼18 %) at a relatively small field of 1.3 Tesla for the films with 10 % gadolinium. A detailed study of temperature and magnetic field dependent resistivity, magnetoresistance, and Hall Effect will be presented.


2018 ◽  
Vol 648 ◽  
pp. 113-119 ◽  
Author(s):  
Chenghu Dai ◽  
Fengqiang Shang ◽  
Zhixian Wei ◽  
Zhen Chen ◽  
Xueyu Yan ◽  
...  

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