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| GIANT MAGNETIC TUNNELING EFFECT IN FE/AL2O3/FE JUNCTION |
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| Author(s): MIYAZAKI T, TEZUKA N |
| Source: JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS Volume: 139 Issue: 3 Pages: L231-L234 Published: JAN 1995 |
| Times Cited: 556 References: 12 |
| Abstract: A giant magnetoresistance ratio of 30% at 4.2 K and 18% at 300 K was observed for the first time in an Fe/Al2O3/Fe junction. The conductance at room temperature was expressed well by G = 96.2 (1 + 0.09 cos theta) (Omega(-1)), where a is the angle between the magnetizations of two iron electrodes. The dependence of the magnetoresistance ratio, saturated resistance and also the tunneling current on temperature were measured in the range 4.2-300 K. The results support the claim that the giant magnetoresistance is due to the magnetic tunneling of electrons between the electrodes through the thin Al2O3 insulator. |
| Document Type: Letter |
| Language: English |
| Reprint Address: MIYAZAKI, T (reprint author), TOHOKU UNIV, FAC ENGN, DEPT APPL PHYS, SENDAI, MIYAGI 98077 JAPAN |
| Publisher: ELSEVIER SCIENCE BV, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS |
| Subject Category: Materials Science, Multidisciplinary; Physics, Condensed Matter |
| IDS Number: QE023 |
| ISSN: 0304-8853 |
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| | | | | | | | | Record from Web of Science® | | | | | | | | | |