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Transport propertie...
Transport properties of amorphous ferromagnets : Hall and ohmic resistivities
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- Malmhäll, Roger (author)
- Umeå universitet,Institutionen för fysik
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- Bhagat, S. M. (author)
- University of Maryland, College Park, USA
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- Rao, K. V. (author)
- University of Illinois at Urbana-Champaign, USA
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- Bäckström, Gunnar (author)
- Umeå universitet,Institutionen för fysik
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(creator_code:org_t)
- John Wiley & Sons, 1979
- 1979
- English.
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In: Physica status solidi. A, Applied research. - : John Wiley & Sons. - 0031-8965 .- 1521-396X. ; 53:2, s. 641-651
- Related links:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Subject headings
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- Simultaneous measurements are made of the ohmic resistivity (ϱ) and the Hall resistivity (ϱH) of a number of amorphous ferromagnetic Fe–Ni based alloys prepared by the rapid quenching technique. The temperature range of the experiments is 100 through 700 K and the applied magnetic fields are varied up to 2.5 T. It turns out that for all the amorphous alloys: (i) R1 ≈ 5 × 10−8 m3/As, (ii) ϱ ≈ 1.5 μΩm, (iii) ϱH has a sharp drop from which the ferromagnetic transition temperature (TC) can be determined to ≈ 5 K, (iv) the critical exponent γ ≈ 1.6 for (TC + 1) < < T < (TC + 50) K, and (v) the extraordinary Hall conductivity γHs is of the same order (≈ 5 × 104 Ω−1 m−1) as in crystalline Fe alloys. Further, in some cases (dϱ/dT) exhibits a well-defined anomaly at TC.
Subject headings
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
Keyword
- Electrical resistivity
- Hall resistivity
- amorphous ferromagnet
- Fe-Ni alloys
Publication and Content Type
- ref (subject category)
- art (subject category)
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