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Physics of Magnetism Lab
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The lab approaches magnets from a quantum perspective and searches for new magnetic materials.
AboutAbout the lab
From quantum phenomena to new magnetic materials.
The Physics of Magnetism Lab studies the physics of magnetism, the most fundamental development of quantum mechanics.
By exploring quantum phenomena, the lab aims to open up new phenomena and functions and to bring cutting-edge knowledge and methods into materials development.
It works from the fundamentals of magnetism in metals and compounds to the development of magnetic materials such as ferrite magnets.
It also aims to train people who can develop materials from new perspectives and physicists who are globally competitive.
Key terms
- Frustration
- A state in which the directions of magnetic moments (spins) cannot be fixed into a single arrangement because of their relationships with neighboring spins, leaving them unable to settle either way
- Ferrite magnet
- An inexpensive, familiar permanent magnet made mainly from iron oxide
- Magnetic anisotropy
- The tendency of a magnet's direction to align easily along a particular direction. Essential for strong permanent magnets
NewsLab news
A graduate student's paper on the thermodynamics of W-type ferrite was published in the Journal of the Ceramic Society of Japan
A postdoc's paper was published in the Journal of the Ceramic Society of Japan, and a figure from the paper was selected for the cover of the August issue
ResearchResearch themes
The lab investigates the fundamentals of magnetism in metals and compounds and searches for materials that show new quantum phenomena. Its work includes metallic magnets with geometric frustration, phase transitions in random magnets, and the development of magnetic materials such as permanent magnets.
*Illustrative imageMetallic magnets with frustration
The lab synthesizes compounds in which cobalt forms a pyrochlore lattice, and has found a ferrimagnet whose magnetizations cancel each other near room temperature, as well as unexpectedly strong ferromagnetism. It studies how geometric frustration affects magnetism.
*Illustrative imagePhase transitions in frustrated magnets
Using neutron scattering and other methods, the lab studies phase transitions in magnets with disorder and frustration. In DyRu2Si2, which has partial order, it found a new phenomenon in which the phase transition proceeds extremely slowly.
*Illustrative imageImproving the performance of ferrite magnets
In La–Co-substituted M-type strontium ferrite, the lab studies how heat treatment and element substitution affect magnetic anisotropy. It also used NMR and calculations to determine where the cobalt sits in the crystal.
*Illustrative imageMaking pure W-type ferrite
W-type strontium ferrite is a material that is difficult to make without other phases mixing in. The lab has developed a way to control the amount of oxygen during synthesis and studies the stability of the phases from a thermodynamic perspective.
MembersFaculty
The members of the Physics of Magnetism Lab consist of faculty, doctoral students, master's students, and fourth-year undergraduate students, among others.
- ProfessorHiroyuki Nakamura
- Associate ProfessorYoshikazu Tabata
VoicesStudent voices
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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: “Metal shavings around bar magnet (close-up)” Maciej J. Mrowinski / CC BY-SA 4.0 (cropped)
- Metallic magnets with frustration: “Kagome lattice blue” N.Mori / Public domain (cropped)
- Phase transitions in frustrated magnets: “Magnetic domain with arrows by Zureks” Zureks, Chris Vardon / CC BY-SA 3.0 (cropped)
- Improving the performance of ferrite magnets: “2 Ferrite ring magnets” Magnequench / CC BY-SA 3.0 (cropped)
- Making pure W-type ferrite: “S Block” Yilin Evan Li / CC BY-SA 4.0 (cropped)
- Related lab (Advanced Materials Physics Lab): “Scanning tunneling microscope-MHS 2237-IMG 3819” Rama / CC BY-SA 3.0 fr (cropped)
- Related lab (Materials Design Engineering Lab): “Stone Flower (Кам’яна квітка)” Яна Сычикова, Сергей Ковачев / CC BY-SA 4.0 (cropped)
- Related lab (Crystal Physics and Engineering Lab): “Plastic Stress Versus Strain” Mikeviti6 / CC BY-SA 4.0 (cropped)
- Related lab (Materials Control Lab): “INSPIRATION CONSOLIDATED COPPER CO.'S ELECTROWINNING REFINING PLANT. PART OF ARIZONA'S EXTENSIVE COPPER INDUSTRY - NARA - 544018” Cornelius M. Keyes / Public domain (cropped)
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