scholarly journals Modeling of magnetization dynamics and thermal magnetic moment fluctuations in nanoparticle-enhanced magnetic resonance detection

2021 ◽  
Vol 129 (21) ◽  
pp. 214505
Author(s):  
Tahmid Kaisar ◽  
Md Mahadi Rajib ◽  
Hatem ElBidweihy ◽  
Mladen Barbic ◽  
Jayasimha Atulasimha
Keyword(s):  
Magnetic Resonance ◽  
Magnetic Moment ◽  
Magnetization Dynamics ◽  
Resonance Detection

scholarly journals Microresonators and Microantennas—Tools to Explore Magnetization Dynamics in Single Nanostructures

2021 ◽  
Vol 7 (2) ◽  
pp. 28
Author(s):  
Hamza Cansever ◽  
Jürgen Lindner
Keyword(s):  
Magnetic Resonance ◽  
Spin Wave ◽  
Focused Ion Beam ◽  
Ion Beam ◽  
Relaxation Times ◽  
Magnetic Nanostructures ◽  
Microwave Frequency ◽  
Direct Access ◽  
Magnetization Dynamics ◽  
G Factor

The phenomenon of magnetic resonance and its detection via microwave spectroscopy provide insight into the magnetization dynamics of bulk or thin film materials. This allows for direct access to fundamental properties, such as the effective magnetization, g-factor, magnetic anisotropy, and the various damping (relaxation) channels that govern the decay of magnetic excitations. Cavity-based and broadband ferromagnetic resonance techniques that detect the microwave absorption of spin systems require a minimum magnetic volume to obtain a sufficient signal-to-noise ratio (S/N). Therefore, conventional techniques typically do not offer the sensitivity to detect individual micro- or nanostructures. A solution to this sensitivity problem is the so-called planar microresonator, which is able to detect even the small absorption signals of magnetic nanostructures, including spin-wave or edge resonance modes. As an example, we describe the microresonator-based detection of spin-wave modes within microscopic strips of ferromagnetic A2 Fe60Al40 that are imprinted into a paramagnetic B2 Fe60Al40-matrix via focused ion-beam irradiation. While microresonators operate at a fixed microwave frequency, a reliable quantification of the key magnetic parameters like the g-factor or spin relaxation times requires investigations within a broad range of frequencies. Furthermore, we introduce and describe the step from microresonators towards a broadband microantenna approach. Broadband magnetic resonance experiments on single nanostructured magnetic objects in a frequency range of 2–18 GHz are demonstrated. The broadband approach has been employed to explore the influence of lateral structuring on the magnetization dynamics of a Permalloy (Ni80Fe20) microstrip.

scholarly journals Cardiac Magnetic Resonance Detection of Myocardial Scarring in Hypertrophic Cardiomyopathy

2009 ◽  
Vol 54 (3) ◽  
pp. 242-249 ◽  
Author(s):  
Deborah H. Kwon ◽  
Nicholas G. Smedira ◽  
E. Rene Rodriguez ◽  
Carmela Tan ◽  
Randolph Setser ◽  
...  
Keyword(s):  
Cardiac Magnetic Resonance ◽  
Hypertrophic Cardiomyopathy ◽  
Magnetic Resonance ◽  
Myocardial Scarring ◽  
Resonance Detection

Nuclear Magnetic Resonance Detection of Two Distinctly Different Chains in the Orthorhombic Crystalline Phase of Polyethylenes†

1998 ◽  
Vol 31 (15) ◽  
pp. 5010-5021 ◽  
Author(s):  
Luminita Hillebrand ◽  
Angelika Schmidt ◽  
Andreas Bolz ◽  
Michael Hess ◽  
Wiebren Veeman ◽  
...  
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Crystalline Phase ◽  
Resonance Detection ◽  
Nuclear Magnetic

Cardiac magnetic resonance detection of left ventricular thrombus in acute myocardial infarction

2013 ◽  
Vol 15 (1) ◽  
pp. 11-16 ◽  
Author(s):  
Chiara Lanzillo ◽  
Mauro Di Roma ◽  
Alessandro Sciahbasi ◽  
Monia Minati ◽  
Luciano Maresca ◽  
...  
Keyword(s):  
Myocardial Infarction ◽  
Acute Myocardial Infarction ◽  
Cardiac Magnetic Resonance ◽  
Magnetic Resonance ◽  
Left Ventricular ◽  
Left Ventricular Thrombus ◽  
Ventricular Thrombus ◽  
Resonance Detection

Real-Time Nuclear Magnetic Resonance Detection of Fumarase Activity Using Parahydrogen-Hyperpolarized [1-13C]Fumarate

2019 ◽  
Vol 141 (51) ◽  
pp. 20209-20214 ◽  
Author(s):  
James Eills ◽  
Eleonora Cavallari ◽  
Carla Carrera ◽  
Dmitry Budker ◽  
Silvio Aime ◽  
...  
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Real Time ◽  
Resonance Detection ◽  
Fumarase Activity ◽  
Nuclear Magnetic
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