Probing depth dependent structure and magnetic properties of thin films using polarized neutron reflectivity

2015 ◽  
Author(s):  
Surendra Singh ◽  
Saibal Basu
Keyword(s):  
Thin Films ◽  
Magnetic Properties ◽  
Neutron Reflectivity ◽  
Probing Depth ◽  
Polarized Neutron

scholarly journals Artificial Magnetic Pattern Arrays Probed by Polarized Neutron Reflectivity

Nanomaterials ◽  
2020 ◽  
Vol 10 (5) ◽  
pp. 851
Author(s):  
Dmitry Gorkov ◽  
Boris P. Toperverg ◽  
Hartmut Zabel
Keyword(s):  
Thin Films ◽  
Neutron Scattering ◽  
Magnetic Thin Films ◽  
Magnetic Films ◽  
Magnetic Film ◽  
Magnetic Multilayers ◽  
Reduced Form ◽  
Neutron Reflectivity ◽  
Polarization Analysis ◽  
Polarized Neutron

Traditionally, neutron scattering is an essential method for the analysis of spin structures and spin excitations in bulk materials. Over the last 30 years, polarized neutron scattering in terms of reflectometry has also contributed largely to the analysis of magnetic thin films and magnetic multilayers. More recently it has been shown that polarized neutron reflectivity is, in addition, a suitable tool for the study of thin films laterally patterned with magnetic stripes or islands. We provide a brief overview of the fundamental properties of polarized neutron reflectivity, considering different domain states, domain fluctuations, and different domain sizes with respect to the neutron coherence volume. The discussion is exemplified by a set of simulated reflectivities assuming either complete polarization and polarization analysis, or a reduced form of polarized neutron reflectivity without polarization analysis. Furthermore, we emphasize the importance of the neutron coherence volume for the interpretation of specular and off-specular intensity maps, in particular when studying laterally non-homogeneous magnetic films. Finally, experimental results, fits, and simulations are shown for specular and off-specular scattering from a magnetic film that has been lithographically patterned into a periodic stripe array. These experiments demonstrate the different and mutually complementary information that can be gained when orienting the stripe array parallel or perpendicular to the scattering plane.

scholarly journals Weak magnetism of Aurivillius-type multiferroic thin films probed by polarized neutron reflectivity

2018 ◽  
Vol 2 (4) ◽  
Author(s):  
Xiaofang Zhai ◽  
Alexander J. Grutter ◽  
Yu Yun ◽  
Zhangzhang Cui ◽  
Yalin Lu
Keyword(s):  
Thin Films ◽  
Neutron Reflectivity ◽  
Weak Magnetism ◽  
Polarized Neutron

Polarized-neutron reflectivity for thin films of dilute magnetic alloys

2004 ◽  
Vol 70 (14) ◽  
Author(s):  
V. N. Gladilin ◽  
V. M. Fomin ◽  
J. T. Devreese ◽  
J. Swerts ◽  
K. Temst ◽  
...  
Keyword(s):  
Thin Films ◽  
Neutron Reflectivity ◽  
Magnetic Alloys ◽  
Polarized Neutron ◽  
Dilute Magnetic Alloys

MAGNETIC PROPERTIES OF fcc Fe THIN FILMS

2000 ◽  
Vol 07 (05n06) ◽  
pp. 667-671 ◽  
Author(s):  
A. KAKIZAKI ◽  
N. KAMAKURRA ◽  
M. SAWADA ◽  
K. HAYASHI ◽  
T. SAITOH
Keyword(s):  
Thin Films ◽  
Magnetic Properties ◽  
Valence Band ◽  
Photoelectron Spectroscopy ◽  
Room Temperature ◽  
Core Level ◽  
Ferromagnetic Phase ◽  
Line Shape Analysis ◽  
Probing Depth ◽  
Split Valence

The magnetic properties of fcc Fe thin films with a thickness of 1–11 monolayers (ML) grown at room temperature on fcc Co, which was prepared more than 15 ML on Cu(001), have been studied by spin-resolved core level and valence band photoelectron spectroscopy. The observed exchange split valence band structures show that Fe films below 11 ML are in a high spin ferromagnetic phase. Based on the line shape analysis of 3s core level spectra with a cluster model calculation and considering the probing depth of photoelectron spectroscopy, we demonstrate that in the 5–11 ML region, only the topmost few layers of Fe film reveal ferromagnetism as observed in the Fe/Cu(001) system.

scholarly journals Artificial Magnetic Pattern Arrays Probed by Polarized Neutron Reflectivity

2020 ◽  
Author(s):  
Dmitry Gorkov ◽  
Boris P. Toperverg ◽  
Hartmut Zabel
Keyword(s):  
Thin Films ◽  
Neutron Scattering ◽  
Magnetic Thin Films ◽  
Magnetic Films ◽  
Magnetic Film ◽  
Magnetic Multilayers ◽  
Reduced Form ◽  
Neutron Reflectivity ◽  
Polarization Analysis ◽  
Polarized Neutron

Traditionally, neutron scattering is an essential method for the analysis of spin structures and spin excitations in bulk materials. Over the last 30 years, polarized neutron scattering in terms of reflectometry has also contributed largely to the analysis of magnetic thin films and magnetic multilayers. More recently it has been shown that polarized neutron reflectivity is, in addition, a suitable tool for the study of thin films laterally patterned with magnetic stripes or islands. We provide a brief overview of the fundamental properties of polarized neutron reflectivity, considering different domain states, domain fluctuations, and different domain sizes with respect to the neutron coherence volume. The discussion is exemplified by a set of simulated reflectivities assuming either complete polarization and polarization analysis, or a reduced form of polarized neutron reflectivity without polarization analysis. Furthermore, we emphasize the importance of the neutron coherence volume for the interpretation of specular and off-specular intensity maps, in particular when studying laterally non-homogeneous magnetic films. Finally, experimental results, fits, and simulations are shown for specular and off-specular scattering from a magnetic film that has been lithographically patterned into a periodic stripe array. These experiments demonstrate the different and mutually complementary information that can be gained when orienting the stripe array parallel or perpendicular to the scattering plane.

Soft Magnetic Properties of Fe-Ti-N Alloy Thin Films

1998 ◽  
Vol 22 (4_1) ◽  
pp. 186-189
Author(s):  
M. Matsumoto ◽  
A. Morisako ◽  
Y. Mutoh
Keyword(s):  
Thin Films ◽  
Magnetic Properties ◽  
Soft Magnetic Properties ◽  
Soft Magnetic

Structure and Magnetic Properties for Fe-Pt/Cu/Fe Thin Films

2010 ◽  
Vol 130 (7) ◽  
pp. 621-625
Author(s):  
Hajime Ishioka ◽  
Mari Tahara ◽  
Kohtaro Sato ◽  
Natsumi Oka ◽  
Toshiyuki Shima
Keyword(s):  
Thin Films ◽  
Magnetic Properties

Magnetic properties of FeXNi100-X (X=20, 17, 15 %) thin films: focus on high-frequency sensory applications

2019 ◽  
pp. 20-25
Author(s):  
Anna Chlenova ◽  
◽  
Elizaveta Golubeva ◽  
Iuliia Novoselova ◽  
Ruslan Salikhov ◽  
...  
Keyword(s):  
Thin Films ◽  
Magnetic Properties ◽  
High Frequency
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