Room temperature magnetoelectric control of micromagnetic structure in iron garnet films

2008 ◽  
Vol 93 (18) ◽  
pp. 182510 ◽  
Author(s):  
A. S. Logginov ◽  
G. A. Meshkov ◽  
A. V. Nikolaev ◽  
E. P. Nikolaeva ◽  
A. P. Pyatakov ◽  
...  
Keyword(s):  
Room Temperature ◽  
Garnet Films ◽  
Iron Garnet

scholarly journals Spin Seebeck effect and ballistic transport of quasi-acoustic magnons in room-temperature yttrium iron garnet films

2018 ◽  
Vol 51 (23) ◽  
pp. 234003 ◽  
Author(s):  
Timo B Noack ◽  
Halyna Yu Musiienko-Shmarova ◽  
Thomas Langner ◽  
Frank Heussner ◽  
Viktor Lauer ◽  
...  
Keyword(s):  
Yttrium Iron Garnet ◽  
Room Temperature ◽  
Ballistic Transport ◽  
Seebeck Effect ◽  
Yttrium Iron ◽  
Garnet Films ◽  
Spin Seebeck Effect ◽  
Iron Garnet

Bose–Einstein condensation of spin wave quanta at room temperature

2011 ◽  
Vol 369 (1951) ◽  
pp. 3575-3587 ◽  
Author(s):  
O. Dzyapko ◽  
V. E. Demidov ◽  
G. A. Melkov ◽  
S. O. Demokritov
Keyword(s):  
Room Temperature ◽  
Chemical Potential ◽  
Spin Waves ◽  
Einstein Condensation ◽  
Quasi Equilibrium ◽  
Magnetic Media ◽  
Bose Einstein Condensation ◽  
Garnet Films ◽  
Iron Garnet ◽  
Bose Einstein

Spin waves are delocalized excitations of magnetic media that mainly determine their magnetic dynamics and thermodynamics at temperatures far below the critical one. The quantum-mechanical counterparts of spin waves are magnons, which can be considered as a gas of weakly interacting bosonic quasi-particles. Here, we discuss the room-temperature kinetics and thermodynamics of the magnon gas in yttrium iron garnet films driven by parametric microwave pumping. We show that for high enough pumping powers, the thermalization of the driven gas results in a quasi-equilibrium state described by Bose–Einstein statistics with a non-zero chemical potential. Further increases of the pumping power cause a Bose–Einstein condensation documented by an observation of the magnon accumulation at the lowest energy level. Using the sensitivity of the Brillouin light scattering spectroscopy to the degree of coherence of the scattering magnons, we confirm the spontaneous emergence of coherence of the magnons accumulated at the bottom of the spectrum, occurring if their density exceeds a critical value.

scholarly journals Evolution of MEG: a first MEG-feasible fluxgate magnetometer

2021 ◽  
Author(s):  
N. Koshev ◽  
A. Butorina ◽  
E. Skidchenko ◽  
A. Kuzmichev ◽  
A. Ossadtchi ◽  
...  
Keyword(s):  
Room Temperature ◽  
Alpha Rhythm ◽  
Fluxgate Magnetometer ◽  
Optically Pumped ◽  
Yttrium Iron ◽  
Garnet Films ◽  
Solid State Sensor ◽  
Induced Field ◽  
Current Article ◽  
Iron Garnet

AbstractIn the current article we present a first solid-state sensor feasible for magnetoencephalography (MEG), and working at room temperature. The sensor is a fluxgate magnetometer based on yttrium-iron garnet films (YIGM). In this feasibility study we prove the concept of usage the YIGM in terms of MEG by registering a simple brain induced field: the human alpha rhythm 1. All the experiments and results are validated with usage of another kind of high-sensitive magnetometers - optically pumped magnetometer (OPM), which currently appears to be well-established in terms of MEG.

Dense nanocrystalline yttrium iron garnet films formed at room temperature by aerosol deposition

2016 ◽  
Vol 76 ◽  
pp. 365-369 ◽  
Author(s):  
Scooter D. Johnson ◽  
Evan R. Glaser ◽  
Shu-Fan Cheng ◽  
Jennifer Hite
Keyword(s):  
Yttrium Iron Garnet ◽  
Room Temperature ◽  
Aerosol Deposition ◽  
Yttrium Iron ◽  
Garnet Films ◽  
Iron Garnet

Observation of parametric amplification of propagating dipole-exchange spin waves in yttrium iron garnet films

JETP Letters ◽  
1996 ◽  
Vol 64 (3) ◽  
pp. 171-176 ◽  
Author(s):  
B. A. Kalinikos ◽  
N. G. Kovshikov ◽  
M. P. Kostylev ◽  
H. Benner
Keyword(s):  
Yttrium Iron Garnet ◽  
Spin Waves ◽  
Parametric Amplification ◽  
Yttrium Iron ◽  
Garnet Films ◽  
Iron Garnet ◽  
Dipole Exchange

scholarly journals Double accumulation and anisotropic transport of magnetoelastic bosons in yttrium iron garnet films

2021 ◽  
Vol 104 (1) ◽  
Author(s):  
Pascal Frey ◽  
Dmytro A. Bozhko ◽  
Victor S. L'vov ◽  
Burkard Hillebrands ◽  
Alexander A. Serga
Keyword(s):  
Yttrium Iron Garnet ◽  
Yttrium Iron ◽  
Garnet Films ◽  
Anisotropic Transport ◽  
Iron Garnet

scholarly journals Magnetism and spin transport in rare-earth-rich epitaxial terbium and europium iron garnet films

2018 ◽  
Vol 2 (9) ◽  
Author(s):  
Ethan R. Rosenberg ◽  
Lukáš Beran ◽  
Can O. Avci ◽  
Cyrus Zeledon ◽  
Bingqian Song ◽  
...  
Keyword(s):  
Rare Earth ◽  
Spin Transport ◽  
Garnet Films ◽  
Iron Garnet

Observation of Enhanced Faraday Effect in Garnet-Based Magnetophotonic Crystals

2004 ◽  
Vol 834 ◽  
Author(s):  
A. A. Fedyanin ◽  
D. Kobayashi ◽  
K. Nishimura ◽  
H. Uchida ◽  
M. Inoue ◽  
...  
Keyword(s):  
Faraday Rotation ◽  
Faraday Effect ◽  
Silicon Oxide ◽  
Photonic Band Gap ◽  
One Dimensional ◽  
Garnet Films ◽  
Faraday Rotation Angle ◽  
Magnetophotonic Crystals ◽  
Iron Garnet ◽  
Photonic Band

ABSTRACTThe fabrication of one-dimensional magnetophotonic crystals (MPC) composed from Bi-substituted yttrium-iron-garnet films separated by the silicon oxide layers is presented. The enhancement of the Faraday rotation angle is observed at the spectral regions of the photonic band gap edges. The effective Faraday rotation achieves the values up to 1.5 degrees per micron at 1100-nm-wavelength.

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