Available experiments and instruments

Short Mid Long Single turn

Available Field 75 T 65 T 35 T 200 T

Magnetization ○ ○ ○ ○

4-probe resistivity ○ ○ ○

Non-contact resistivity ○ ○ ○

Magnetostriction ○ ○

Polarization ○ ○

Magnetocalorimetry ○ ○

Heat capacity ○ ○

Imaging ○

Magneto-optics ○ ○

Dilution refrigerator ○

※ We are willing to undertake the development of

measurement techniques and joint research, which are

tailored to user requirements. Please feel free to contact us.

Joint research For queries regarding joint research, please contact the

IMGSL staff in advance.

(Non-destructive Magnet Group)

Prof. Koichi Kindo kindo@issp.u-tokyo.ac.jp

Prof. Masashi Tokunaga tokunaga@issp.u-tokyo.ac.jp

(Destructive Magnet Group)

Prof. Shojiro Takeyama takeyama@issp.u-tokyo.ac.jp

Prof. Yasuhiro H. Matsuda ymatsuda@issp.u-tokyo.ac.jp

(Guest house)

Single: 2,500 JPY per night Twin: 5,000 JPY per night

Access -- From Narita airport to Kashiwa Station --

The limousine bus ticket for Kashiwa Station (3rd stop, "The

Crest Hotel") is available at the Limousine Counter in the arrival

lobby (1F). Transport by train is also available.

-- From Kashiwa station to ISSP --

Disembark from the limousine bus in front of "The Crest Hotel

(Kashiwa-eki Nishi Guchi) (Kashiwa Station West Exit)". Walk

for 2 min towards Kashiwa Station. Take the "Kokuritsu Gan

Center (The National Cancer Center)" route. Taxis are also

available.

5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8581, JAPAN

The Institute of Solid State Physics

http://www.issp.u-tokyo.ac.jp/index_en.html

International MegaGauss Science Laboratory (Building C,K)

http://www.issp.u-tokyo.ac.jp/labs/mgsl/indexe.html

東京大学物性研究所

国際超強磁場科学研究施設 International MegaGauss Science Laboratory

The Institute for Solid State Physics

High-magnetic-field facility

For solid state physics experiments under high magnetic

fields (above 20 T), a high-magnetic-field facility is needed. The

duration of the pulsed magnetic field decreases with increased

peak magnetic field intensity, as shown in the above figure. The

non-destructive magnet (above 40 T) has a duration in the

order of milliseconds, and the destructive magnet (above 100

T) has a duration in the order of microseconds.

At the International MegaGauss Science Laboratory (IMGSL),

several types of magnet are used in solid state physics

applications. With the non-destructive pulsed magnet (up to 85

T), we can perform various measurements (magnetization,

resistivity, heat capacity, imaging, etc.) in a wide temperature

range of 100 mK − 300 K. The magnetic field direction applied

to the sample can be continuously changed using a rotating

probe.

On the other hand, under an ultra-high magnetic field of 1,000

T, the magnetic length (the typical size of the wavefunction

under the magnetic field) is reduced to a lattice constant, and

observation of novel phenomena can be expected. Solid state

physics experiments using a destructive pulsed magnet (up to

730 T) can be performed only at IMGSL. At present,

high-magnetic-field facilities have been built in Japan, the

United States, Europe, and China. However, our facility is

leading high magnetic field research worldwide, especially in

the field of magnetism, and has yielded significant scientific

results based on the application of superior technology.

Non-destructive pulsed magnet

(Kindo Lab., Tokunaga Lab.) Our non-destructive pulsed magnet generates a magnetic

field of up to 85 T within the order of several milliseconds to

seconds (see below figure). The non-destructive magnet is

characterized by its rapid cooling time, so users can utilize the

pulsed magnet more efficiently compared with those of other

facilities. For example, with the mid-pulse magnet (maximum

magnetic field: 65 T) it is possible to generate a magnetic field

10 times daily. In addition, combinations of a variety of

experimental techniques are possible, which enables users to

examine diverse physical properties. Therefore, if users visit

our facility with a sample, they can expect to obtain

high-quality data.

Available magnets

Magnet type Bore (mm) Bmax (T) Pulse width

(ms)

short-pulse 17 75 4

mid-pulse 1 18 55 36

mid-pulse 2 10.5 65 36

long-pulse 28 35 1,000

Destructive pulsed magnet

(Takeyama Lab., Matsuda Lab.) In order to generate an ultra-high magnetic field (above 100 T),

the destructive coil technique is used. A short-pulsed magnetic

field with a duration of several microseconds is available before coil

destruction. At IMGSL, two types of instrument (the single-turn

coil system and the electro-magnetic flux compression system) are

used for solid-state physics measurements.

Single-turn coil system In the single-turn coil system, a magnet coil with a bore

diameter of 8-18 mm is used. The coil is destroyed in each shot,

but the sample inside the coil remains intact. A horizontal

single-turn coil system for optical measurement, and a vertical

single-turn coil system for low temperature measurement (up to 2

K) are available. It is possible to perform magneto-optical and

magnetization measurements at 100 − 200 T. Please contact our

facility for details.

Electro-magnetic flux compression system

In the electro-magnetic flux compression method, an imploding

metal cylinder (liner) compresses the initial magnetic field into a 5-6

mm diameter space. With the destruction of the magnet coil, the

sample is also destroyed. An electro-magnetic flux compression

system (200 − 730 T) is now in development, so it is currently

unavailable to users (in-house research only).

(printed 2014.09.02)