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Integrated Magnetic Devices Lab
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A lab tackling spin waves in magnetic materials and magnetic recording.
AboutAbout the lab
Tackling spin waves in magnetic materials and magnetic recording.
The Integrated Magnetic Devices Lab studies information devices that use the motion of electron spins in ferromagnetic materials, and magnetic recording technology for hard disks and similar devices.
The lab explores, through both theory and experiment, new devices that use spin waves, which are generated when a microwave magnetic field is applied to electron spins, for information transmission and logic operations.
In magnetic recording, the lab works on technology that achieves both higher recording density and lower recording energy.
The lab's website lists it under the name "Electronic Devices Lab."
Key terms
- Spin wave
- A collective motion of spins that is generated when a microwave magnetic field is applied to electron spins in a ferromagnetic material
- Microwave-assisted magnetic recording
- A new magnetic recording technology that writes data by exploiting the synergistic effect of microwaves and the magnetic field of the recording head
- Micromagnetic simulator
- A program that calculates the motion of the magnetization of a magnetic material on a computer
ResearchResearch themes
This lab studies information devices that use spin waves, and magnetic recording technology for hard disks and similar devices. Among its computational themes, it is also developing a simulator to study the magnetization dynamics of magnetic materials.
*Illustrative imageInformation devices using spin waves
The lab studies, through both theory and experiment, devices that use spin waves, which are generated when a microwave magnetic field is applied to electron spins in a ferromagnetic material, for information transmission and logic operations. Spin waves have the advantages of transmitting information without charge transfer and of processing phase information by making use of their wave properties.
*Illustrative imageMicrowave-assisted magnetic recording
To achieve both higher recording density and lower recording energy in hard disks, the lab uses simulation to study a magnetic recording technique that exploits the synergistic effect of microwaves on the order of tens of GHz and the magnetic field of the recording head.
*Illustrative imageUltra-high-speed micromagnetic simulator
Calculating the motion of magnetization takes a long time, so the lab is developing an ultra-high-speed simulator that uses GPUs. It is also reducing computation time through software, including time-parallel computation methods.
MembersFaculty
The members of the Integrated Magnetic Devices Lab consist of faculty members and master's and undergraduate students.As of 2025
- Associate ProfessorTerumitsu Tanaka
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Report an errorAbout the images
The top and research theme images are illustrative and were not taken at the lab. They are cropped from Wikimedia Commons images. Cropped CC BY-SA images are provided under the same CC BY-SA license as the original (version shown on each line).
- Top image: “2019 Rozebrane dyski twarde” Jacek Halicki / CC BY-SA 4.0 (cropped)
- Information devices using spin waves: “Active region of the thin-film splitted Hall structure of a 3D magnetic sensor” TetyanaMarusenkova / CC BY-SA 3.0 (cropped)
- Microwave-assisted magnetic recording: “Hard disk head crash” Alchemist-hp (talk) www.pse-mendelejew.de / CC BY-SA 3.0 (cropped)
- Ultra-high-speed micromagnetic simulator: “Domain walls by Zureks” Zureks / Public domain (cropped)
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