Target system for fabrication and control of magnetic metal contentin diluted magnetic semiconductors by pulsed-laser deposition

2004 ◽  
Vol 22 (5) ◽  
pp. 2096-2100 ◽  
Author(s):  
T. Orii ◽  
T. Seto ◽  
M. Hirasawa
Keyword(s):  
Pulsed Laser Deposition ◽  
Diluted Magnetic Semiconductors ◽  
Magnetic Semiconductors ◽  
Pulsed Laser ◽  
Laser Deposition ◽  
Target System ◽  
Magnetic Metal ◽  
Diluted Magnetic ◽  
And Control

scholarly journals The Al Doping Effect on Epitaxial (In,Mn)As Dilute Magnetic Semiconductors Prepared by Ion Implantation and Pulsed Laser Melting

Materials ◽  
2021 ◽  
Vol 14 (15) ◽  
pp. 4138
Author(s):  
Ye Yuan ◽  
Yufang Xie ◽  
Ning Yuan ◽  
Mao Wang ◽  
René Heller ◽  
...  
Keyword(s):  
Curie Temperature ◽  
Ion Implantation ◽  
Diluted Magnetic Semiconductors ◽  
Laser Annealing ◽  
Magnetic Semiconductors ◽  
Dilute Magnetic Semiconductors ◽  
Pulsed Laser ◽  
Laser Melting ◽  
Co Doping ◽  
Diluted Magnetic

One of the most attractive characteristics of diluted ferromagnetic semiconductors is the possibility to modulate their electronic and ferromagnetic properties, coupled by itinerant holes through various means. A prominent example is the modification of Curie temperature and magnetic anisotropy by ion implantation and pulsed laser melting in III–V diluted magnetic semiconductors. In this study, to the best of our knowledge, we performed, for the first time, the co-doping of (In,Mn)As diluted magnetic semiconductors by Al by co-implantation subsequently combined with a pulsed laser annealing technique. Additionally, the structural and magnetic properties were systematically investigated by gradually raising the Al implantation fluence. Unexpectedly, under a well-preserved epitaxial structure, all samples presented weaken Curie temperature, magnetization, as well as uniaxial magnetic anisotropies when more aluminum was involved. Such a phenomenon is probably due to enhanced carrier localization introduced by Al or the suppression of substitutional Mn atoms.

The Optimization of Niobium Diselenide Thin Films Through Control of Pulsed Laser Deposition Parameters

1992 ◽  
Vol 285 ◽  
Author(s):  
Allan E. Day ◽  
Samuel J.P. Laube ◽  
M.S. Donley ◽  
J.S. Zabinski
Keyword(s):  
Thin Films ◽  
Pulsed Laser Deposition ◽  
Pulsed Laser ◽  
Optimal Growth ◽  
Growth Conditions ◽  
Laser Deposition ◽  
Film Properties ◽  
Niobium Diselenide ◽  
Deposition Parameters ◽  
And Control

ABSTRACTNiobium diselenide has potential for use as a conductive lubricant, but to achieve the optimal properties of low friction coefficient, high conductivity and oxidation resistance, the SeJNb ratio and crystallinity must be carefully controlled. It has been shown that Pulsed Laser Deposition (PLD) permits the required degree of control, even over films with complex stoichiometries. (4–8). In this study, PLD was used to grow stoichiometric, crystalline thin films of niobium diselenide and to study the effects of laser deposition parameters on film properties. Film chemistry and crystallinity were evaluated using XPS, RBS, and glancingangle XRD. Friction and wear measurements were taken on a ball-on-flat tribometer. The deposition apparatus incorporates a fully computerized data acquisition and control system that facilitated the correlation of the laser deposition parameters to film properties. This study has shown that film chemistry could be changed from substoichiometric to superstoichiometric and crystallinity varied between amorphous to highly crystalline by appropriate choice of PLD parameters. The property correlations and acquisition system that permitted the identification of the optimal growth conditions will be described.

Distinguish and control the multi-level resistive switching for ferroelectric layer and interface in a YMnO3/Nb:SrTiO3 device

RSC Advances ◽  
2016 ◽  
Vol 6 (2) ◽  
pp. 1445-1451 ◽  
Author(s):  
Ling Wei ◽  
C. H. Jia ◽  
W. F. Zhang
Keyword(s):  
Pulsed Laser Deposition ◽  
Resistive Switching ◽  
Pulsed Laser ◽  
Laser Deposition ◽  
Ferroelectric Layer ◽  
Multi Level ◽  
And Control

A YMnO3/Nb:SrTiO3 (YMO/NSTO) ferroelectric device with a step was fabricated by pulsed laser deposition.

Room-temperature Ferromagnetic Zn0.95Co0.05O Diluted Magnetic Semiconducting Thin Films by Pulsed Laser Deposition

2006 ◽  
Vol 928 ◽  
Author(s):  
Yuebin Zhang ◽  
Qing Liu ◽  
Thirumany Sritharan ◽  
Chee-Lip Gan ◽  
Sean Li
Keyword(s):  
Thin Films ◽  
Pulsed Laser Deposition ◽  
Room Temperature ◽  
Room Temperature Ferromagnetism ◽  
Pulsed Laser ◽  
Laser Deposition ◽  
X Ray ◽  
Doped Zno ◽  
Diluted Magnetic ◽  
Co Doped

ABSTRACTCo-doped ZnO thin films with room-temperature ferromagnetism have been successfully synthesized on (001) Si substrates at 450 °C by pulsed-laser deposition using a Zn0.95Co0.05O ceramic target. Their microstructural properties are carefully studied using atomic force microscopy, x-ray diffraction and high-resolution transmission electron microscopy. The oxidation state of Co and the ratio of Co/Zn are examined by x-ray photoelectron spectroscopy, and magnetic measurements are performed using SQUID. The results show that a single-phase crystalline Co-doped ZnO film was grown with (002) preferential orientation and some edge dislocations formed during the film growth. The origin of room-temperature ferromagnetism is explored. The presence of nanoclusters of any magnetic phase can be ruled out. The dislocations, coupled with oxygen vacancy, may contribute to the ferromagnetic properties in the much diluted magnetic semiconductor.

scholarly journals Diluted magnetic semiconductors formed by ion implantation and pulsed-laser melting

2003 ◽  
Vol 340-342 ◽  
pp. 908-912 ◽  
Author(s):  
M.A. Scarpulla ◽  
U. Daud ◽  
K.M. Yu ◽  
O. Monteiro ◽  
Z. Liliental-Weber ◽  
...  
Keyword(s):  
Ion Implantation ◽  
Diluted Magnetic Semiconductors ◽  
Magnetic Semiconductors ◽  
Pulsed Laser ◽  
Laser Melting ◽  
Diluted Magnetic

Spectral-component monitoring and control of pulsed laser deposition of YBCO films

1997 ◽  
Author(s):  
Rand R. Biggers ◽  
Paul T. Murray ◽  
David B. Mast ◽  
I. Maartense ◽  
T. L. Peterson ◽  
...  
Keyword(s):  
Pulsed Laser Deposition ◽  
Spectral Component ◽  
Pulsed Laser ◽  
Laser Deposition ◽  
Monitoring And Control ◽  
Ybco Films ◽  
And Control
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