Ferromagnetic thin film and spin current (3) - Sample preparation -

  • Summary

ER190004E

The method that detects the spin dependent recombination current in the semiconductor or the electromotive force derived from inverse spin-Hall effect using an ESR instrument is usually called electrically detected magnetic resonance (EDMR).
While a conventional scheme detects microwave reflection, EDMR measurement detects potential difference of devices attached to electrodes. Therefore, it is necessary to prepare electrodes, lead wiring and a sample tube. Here, a simple example of sampling for EDMR is introduced.

An example for fabrication of electrodes and electric wiring to thin film

Φ5の試料管に充填しやすいように、薄膜素子の横幅は3 mm程度にカットした方がよい。
Width of device is desirable of about 3 mm in order to load easily into a sample tube with a diameter of Φ5.
接着に使うリード線は、被覆を剥離剤で除去した後、薄膜の両端に仮固定する。
After removing the coating of the lead wire by a chemical agent it is temporarily fixed to both side of thin film device.
市販の銀ペーストを少量、つまようじなどを使って、スポット滴下して接着する。
The lead wire is glued by a small amount of Ag paste using thin stick.
Fig. 1 An example of gluing lead wire to device

Fig. 2 An example of fabricating sampling tube for EDMR measurement
Fig. 2 An example of fabricating sampling tube for EDMR measurement
* Measured samples were provided from Dr. Katsuichi Kanemoto of Osaka City University.
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