Unusual Magnetic Behaviour of BCT Fe Thin Films Evidenced by 57Fe Mössbauer Spectrometry

1997 ◽  
Vol 475 ◽  
Author(s):  
S. Andrieu ◽  
Ph. Bauer ◽  
O. M. Lemine ◽  
E. Snoeck ◽  
M. Piecuch
Keyword(s):  
Thin Films ◽  
Magnetic Relaxation ◽  
Molecular Beam ◽  
Mössbauer Spectrometry ◽  
Growth Direction ◽  
Magnetic Behaviour ◽  
Relaxation Phenomena ◽  
Mossbauer Spectrometry ◽  
Bcc Structure ◽  
Fcc Structure

ABSTRACTUnusual magnetic behaviours occur in thin Fe films grown on Ir(100) by Molecular Beam Epitaxy. Four different magnetic sites are actually observed in these layers by Conversion Electron Mössbauer Spectrometry. The magnetic relaxation phenomena found in the strained FCC structure together with spin wave softening observed in the strained BCC structure point to small magnetic correlations along the growth direction.

Study of crystallization defects in FeF3 thin films by Mössbauer spectrometry

1981 ◽  
Vol 52 ◽  
pp. 989-994 ◽  
Author(s):  
A.S. Barrière ◽  
A. Lachter ◽  
J.C. Gianduzzo ◽  
F. Ménil
Keyword(s):  
Thin Films ◽  
Mössbauer Spectrometry ◽  
Mossbauer Spectrometry

scholarly journals Structural and Magnetic Ordering in Fe-Ga Thin Films Examined by Mössbauer Spectrometry

2011 ◽  
Vol 119 (1) ◽  
pp. 21-23 ◽  
Author(s):  
T. Szumiata ◽  
K. Brzózka ◽  
M. Gawroński ◽  
B. Górka ◽  
A. Javed ◽  
...  
Keyword(s):  
Thin Films ◽  
Magnetic Ordering ◽  
Mössbauer Spectrometry ◽  
Mossbauer Spectrometry

Depth-Selective Investigation of Fe-Silicides Formed After Molecular Beam Epitaxy, Using Conversion Electron MÖSsbauer Spectrometry.

1994 ◽  
Vol 337 ◽  
Author(s):  
S. Degroote ◽  
T. Kobayashi ◽  
J. Dekoster ◽  
A. Vantomme ◽  
G. Langouche
Keyword(s):  
Conversion Electron ◽  
Room Temperature ◽  
Molecular Beam ◽  
Mössbauer Spectrometry ◽  
Silicide Formation ◽  
Iron Silicides ◽  
Annealing Temperatures ◽  
Sample Composition ◽  
Mossbauer Spectrometry

ABSTRACTFe-Silicides were formed by annealing MBE-deposited thin Fe layers with a thickness in the range of 24 Å on (7x7) reconstructed Si(l11) substrates. Samples suitable for depth-selective investigations by CEMS (Conversion Electron Mössbauer Spectrometry) were prepared by using only the 57Fe isotope for a few monolayers of the total Fe film, and depositing these selectively right at the interface or separated from it. During the growth the substrate was held at room temperature. The silicide formation upon annealing to temperatures up to 900°C was monitored in situ with RHEED. From the CEMS studies a drastically different sample composition was inferred as a function of monolayer distance from the interface for the as-deposited samples and for annealing temperatures up to 400°C. Analysis of these spectra indicates the presence of metastable and stable iron silicides.

Chemical Ordering and Microstructure of FePd Thin Films with perpendicular Magnetic Anisotropy

2000 ◽  
Vol 615 ◽  
Author(s):  
Gilles B. ◽  
Xu F.F. ◽  
Halley D. ◽  
Marty A. ◽  
Samson Y. ◽  
...  
Keyword(s):  
Thin Films ◽  
Room Temperature ◽  
Molecular Beam ◽  
Perpendicular Magnetic Anisotropy ◽  
Growth Direction ◽  
X Rays ◽  
Chemical Ordering ◽  
Average Size ◽  
Single Orientation ◽  
Periodic Arrangement

ABSTRACTFePd(001) thin films have been grown by the molecular beam epitaxy (MBE) technique. At room temperature, these films are chemically disordered whereas at 350 °C a well ordered L10 structure is found with the c-axis oriented in the growth direction. By combining RHEED, STM and Auger measurements, it is suggested that ordering occurs at the growing surface by the development of bi-atomic steps of the ordered structure. We have put in evidence that the surfactant behavior of the Pd atoms is mainly involved in the ordering process and selects the single orientation of the c-axis. For intermediate temperatures between RT and 350 °C, TEM and X-rays have evidenced a pseudo-periodic arrangement of anti-phased domains having a columnar shape. The variation of the long-range order parameter is related to the average size of these ordered domains.

New phases and chemical short range order in co-deposited CoFe thin films with bcc structure: an NMR study

1997 ◽  
Vol 103 (1) ◽  
pp. 5-12 ◽  
Author(s):  
M. Wojcik ◽  
J.P. Jay ◽  
P. Panissod ◽  
E. Jedryka ◽  
J. Dekoster ◽  
...  
Keyword(s):  
Thin Films ◽  
Short Range ◽  
Short Range Order ◽  
Range Order ◽  
Nmr Study ◽  
Bcc Structure

scholarly journals Strong texture tuning along different crystalline directions in glass-supported CeO2 thin films by ultrasonic spray pyrolysis

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Inti Zumeta-Dubé ◽  
José Manuel García Rangel ◽  
Jorge Roque ◽  
Issis Claudette Romero-Ibarra ◽  
Mario Fidel García Sánchez
Keyword(s):  
Thin Films ◽  
Spray Pyrolysis ◽  
Spray Pyrolysis Technique ◽  
Morphological Characteristics ◽  
Ultrasonic Spray Pyrolysis ◽  
Cost Effective ◽  
Growth Direction ◽  
Large Area ◽  
Smart Windows ◽  
Ultrasonic Spray

AbstractThe strong facet-dependent performance of glass-supported CeO2 thin films in different applications (catalysis, smart windows, etc.) has been the target of diverse fundamental and technological approaches. However, the design of accurate, cost-effective and scalable methods with the potential for large-area coverage that produce highly textured glass-supported CeO2 thin films remains a technological challenge. In the present work, it is demonstrated that under proper tuning conditions, the ultrasonic spray pyrolysis technique enables one to obtain glass-supported polycrystalline CeO2 films with noticeable texture along both the (100) and (111) directions, as well as with randomly oriented crystallites (no texture). The influence of flow rates, solution molarity, and substrate temperature on the texture and morphological characteristics, as well as optical absorption and Raman response of the deposited films, is evaluated. The obtained results are discussed on the basis of the combined dependence of the CeO2-exposed surfaces on the thermodynamic stability of the corresponding facets and the reaction kinetics, which modulate the crystallite growth direction.

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