Вплив температури на магнiторезистивнi властивостi структурно несуцiльних плiвок Fe та Co
Magnetoresistive properties of ultrathin Fe and Co films with effective thicknesses d =3÷30 nm are studied in a temperature interval of (150–700) K. For films with d =3÷10 nm, the electrical conductivity is found to be thermally activated and the tunnel magnetoresistance effect is revealed. A decrea...
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| Date: | 2018 |
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| Main Authors: | , , , |
| Format: | Article |
| Language: | English |
| Published: |
Publishing house "Academperiodika"
2018
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| Subjects: | |
| Online Access: | https://ujp.bitp.kiev.ua/index.php/ujp/article/view/2018684 |
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| Journal Title: | Ukrainian Journal of Physics |
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Ukrainian Journal of Physics| Summary: | Magnetoresistive properties of ultrathin Fe and Co films with effective thicknesses d =3÷30 nm are studied in a temperature interval of (150–700) K. For films with d =3÷10 nm, the electrical conductivity is found to be thermally activated and the tunnel magnetoresistance effect is revealed. A decrease of the temperature down to 150 K in measurements on as-condensed films is found to result in the appearance of the magnetoresistive hysteresis and a reduction of the tunnel magnetoresistance (TMR) in a thickness interval of 10–15 nm. The maximum TMR value in the fields up to 0.7 T amounted to 1% for the as-condensed Fe films with an effective thickness of 17 nm and the Fe films with an effective thickness of 8 nm annealed at a temperature of 520 K. |
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