Uniform MgB2 thin films grown on Si(111) and Al2O3(0001) substrates prepared by e-beam evaporation and in situ annealing methods

2006 ◽  
Vol 99 (8) ◽  
pp. 08M512 ◽  
Author(s):  
Yi Bing Zhang ◽  
Hong Mei Zhu ◽  
Shi Ping Zhou ◽  
Shi Ying Ding ◽  
Zhi Wei Lin ◽  
...  
Keyword(s):  
Thin Films ◽  
Mgb2 Thin Films

scholarly journals 2-Step In-situ Annealing of Sputter Deposited MgB2 Thin Films

2003 ◽  
Vol 38 (11) ◽  
pp. 635-638
Author(s):  
Zon MORI ◽  
Yuichiro ISHIZAKI ◽  
Toshiya DOI ◽  
Yoshinori HAKURAKU ◽  
Michiya OKADA ◽  
...  
Keyword(s):  
Thin Films ◽  
Sputter Deposited ◽  
Mgb2 Thin Films

scholarly journals In situ epitaxial MgB2 thin films for superconducting electronics

2002 ◽  
Vol 1 (1) ◽  
pp. 35-38 ◽  
Author(s):  
Xianghui Zeng ◽  
Alexej V. Pogrebnyakov ◽  
Armen Kotcharov ◽  
James E. Jones ◽  
X. X. Xi ◽  
...  
Keyword(s):  
Thin Films ◽  
Superconducting Electronics ◽  
Mgb2 Thin Films

In situ deposition of MgB2 thin films by magnetron cosputtering and sputtering combined with thermal evaporation

2005 ◽  
Vol 423 (3-4) ◽  
pp. 89-95 ◽  
Author(s):  
R. Schneider ◽  
J. Geerk ◽  
G. Linker ◽  
F. Ratzel ◽  
A.G. Zaitsev ◽  
...  
Keyword(s):  
Thin Films ◽  
Thermal Evaporation ◽  
In Situ Deposition ◽  
Mgb2 Thin Films

Superconducting properties of two-step in situ annealed MgB2 thin films

2004 ◽  
Vol 412-414 ◽  
pp. 1371-1375 ◽  
Author(s):  
Zon Mori ◽  
Toshiya Doi ◽  
Yuichiro Ishizaki ◽  
Hitoshi Kitaguchi ◽  
Michiya Okada ◽  
...  
Keyword(s):  
Thin Films ◽  
Superconducting Properties ◽  
Mgb2 Thin Films

In situ synthesis of MgB2 thin films for tunnel junctions

2004 ◽  
Vol 85 (22) ◽  
pp. 5290-5292 ◽  
Author(s):  
R. Schneider ◽  
J. Geerk ◽  
F. Ratzel ◽  
G. Linker ◽  
A. G. Zaitsev
Keyword(s):  
Thin Films ◽  
Tunnel Junctions ◽  
In Situ Synthesis ◽  
Mgb2 Thin Films

Deposition of MgB2 Thin Films on Nb Substrates Using an In Situ Annealing PLD Method

2007 ◽  
Vol 546-549 ◽  
pp. 2027-2030 ◽  
Author(s):  
Yue Zhao ◽  
Yi Sun Wu ◽  
S.X. Dou ◽  
T. Tajima ◽  
O.S. Romanenko
Keyword(s):  
Thin Films ◽  
Large Scale ◽  
Pulsed Laser ◽  
Buffer Layers ◽  
Laser Deposition ◽  
Rf Cavities ◽  
Superconducting Rf ◽  
Mgb2 Thin Films ◽  
Scanning Electron

MgB2 thin films have been coated on Nb substrates without any buffer layers. An in situ pulsed laser deposition (PLD) method was used to prepare the coating. The interface between films and substrates has been characterized by scanning electron microscopy (SEM). Surface impedance has been measured for the MgB2 films on Nb substrates. The results were discussed with regard to the potential large scale applications in superconducting RF cavities.

GROWTH OF MgB2 THIN FILMS BY MEANS OF IN SITU DEPOSITION TECHNIQUES

2003 ◽  
Vol 17 (04n06) ◽  
pp. 703-708 ◽  
Author(s):  
R. ROGAI ◽  
V. GALLUZZI ◽  
A. MANCINI ◽  
G. CELENTANO ◽  
T. PETRISOR ◽  
...  
Keyword(s):  
Thin Films ◽  
Film Growth ◽  
Superconducting Phase ◽  
Resistivity Measurements ◽  
In Situ Deposition ◽  
Plasma Species ◽  
Annealing Procedure ◽  
Mgb2 Thin Films ◽  
Deposition Techniques

We report on the growth of MgB 2 thin films by means of Pulsed Laser Deposition (PLD) and Electron Beam (EB) deposition techniques. In order to develop an in-situ deposition procedure both techniques have been exploited following two approaches: the "as grown" procedure, where the superconducting phase is formed during the film growth, and no further process is performed, and the "annealing" procedure, where precursor layers are deposited and annealed in argon atmosphere. In the case of EB evaporated films, the "as grown" procedure revealed to be inadequate, because of the low reactivity of the thermally evaporated species and the high magnesium volatility. On the contrary, using PLD, the higher reactivity of the plasma species promotes the formation of the superconducting phase at deposition temperature as low as 350°C. In the "annealing" procedure, different kinds of precursor layers have been studied, in order to reduce and prevent the fast Mg evaporation at high temperature. Different annealing processes were investigated in order to promote the interdiffusion and reaction between Mg and B. The films were characterised by means of resistivity measurements and X-ray analyses. The surface morphology was observed by SEM microscopy.

In-situ growth of superconducting MgB2 thin films by HPCVD method at low temperature

2007 ◽  
Vol 467 (1-2) ◽  
pp. 1-3 ◽  
Author(s):  
J. Yang ◽  
S. Wang ◽  
F.S. Yang ◽  
Z.P. Zhang ◽  
Z. Ding ◽  
...  
Keyword(s):  
Thin Films ◽  
Low Temperature ◽  
In Situ Growth ◽  
Mgb2 Thin Films

HALL EFFECT, MAGNETORESISTIVITY AND MAGNETIC PROPERTIES OF MgB2 THIN FILMS WITH AlN BUFFER LAYERS

2008 ◽  
Vol 22 (08) ◽  
pp. 991-996
Author(s):  
G. ILONCA ◽  
T. R. YANG ◽  
A. V. POP ◽  
P. BALINT ◽  
M. BODEA ◽  
...  
Keyword(s):  
Thin Films ◽  
Upper Critical Field ◽  
Buffer Layers ◽  
Temperature Dependent ◽  
Sapphire Substrates ◽  
Anisotropic Coefficient ◽  
Aln Buffer ◽  
Mgb2 Thin Films ◽  
Sputtering System

MgB 2 thin films were deposited at low temperature substrates, in situ, on c-plane sapphire substrates, with the aluminium nitride (AlN) buffer layers, using the multiple-target sputtering system. The magnetoresistivities were measured using dc-five probe method in applied magnetic field up to 9 Tesla. The upper critical field anisotropy, HC2(T) and irreversibility field H irr (T) versus temperature were determined. The Hall coefficients RH are slightly temperature dependent and positive in the normal state. The critical temperature of 30–32 K and critical current density of 106-107 A/cm 2 at 4.2 K were obtained. Using extracted data, the coherence length ξo, anisotropic coefficient γ and penetration depth λL were calculated.

The superconducting gap of in situ MgB2 thin films by microwave surface impedance measurements

2002 ◽  
Vol 81 (19) ◽  
pp. 3603-3605 ◽  
Author(s):  
N. Hakim ◽  
C. Kusko ◽  
S. Sridhar ◽  
A. Soukiassian ◽  
X. H. Zeng ◽  
...  
Keyword(s):  
Thin Films ◽  
Surface Impedance ◽  
Superconducting Gap ◽  
Impedance Measurements ◽  
Microwave Surface Impedance ◽  
Mgb2 Thin Films
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