Zobrazeno 1 - 10
of 26
pro vyhledávání: '"R.v. Helmolt"'
Autor:
A. Kattwinkel, E. Gommert, R. Braunstein, Joachim Dr. Wecker, L. Haupt, K. Bärner, N. Hamad, I.V. Medvedeva, R.v. Helmolt
Publikováno v:
Materials Science Forum. :593-596
Autor:
R.v. Helmolt, J. Liebe, A. Kattwinkel, G.H. Rao, L. Haupt, E. Gommert, R. Braunstein, K. Bärner, Joachim Dr. Wecker
Publikováno v:
Physica B: Condensed Matter. 271:15-20
Internal electrical fields of different origin are observed in the semiconducting regime of Nd2/3Sr1/3MnO3−δ epitaxial layers and are assigned to thermoelectric effects and to an ambipolar charge distribution in trap states, following a photogener
Publikováno v:
physica status solidi (a). 165:219-230
The effect of oxygen disorder on the magnetic moment, resistivity, Hall effect and magnetoresistance of oxygen deficient La 2/3 Al 1/3 InO 3-δ epitaxial thin films has been studied in magnetic fields up to 20 T and temperatures down to 4.2 K. Our re
Autor:
J. Liebe, Eberhard Gmelin, E. Kraus, P. Mandal, L. Haupt, K. Bärner, I.V. Medvedeva, R.v. Helmolt
Publikováno v:
Journal de Physique IV Proceedings
Journal de Physique IV Proceedings, EDP Sciences, 1997, 07 (C1), pp.C1-635-C1-636. ⟨10.1051/jp4:19971262⟩
Journal de Physique IV Proceedings, EDP Sciences, 1997, 07 (C1), pp.C1-635-C1-636. ⟨10.1051/jp4:19971262⟩
The Seebeck- effect and the thermal diffusivity k of epitaxial layers of La 0.57 Ca 0.33 MnO 3-δ and bulk samples of Nd 0.67 Sr 0.33 MnO 3-δ were investigated in the temperature range 35K < T < 300K using the time resolved thermoelectric power (fla
Publikováno v:
Applied Physics Letters. 68:2343-2345
The Seebeck effect and the thermal diffusivity of La0.67Ca0.33MnO3−δ were investigated in the temperature range 35
Publikováno v:
IEEE Transactions on Magnetics. 29:2842-2844
Nd/sub 5/Fe/sub 17/ (also referred to as A/sub 2/-phase) is prepared by rapid-quenching and subsequent annealing. Due to the fine, homogeneous distribution of the elements in the melt-spun ribbons, only a short reaction time is required in the anneal
Publikováno v:
IEEE Transactions on Magnetics. 29:2818-2820
Sm/sub 12.6/Fe/sub 87.4-z/Ti/sub z/ with z=2, 3 and 4 elemental powder blends are mechanically alloyed and subsequently two-step heat treated to form hard magnetic microcrystalline Sm-(Fe,Ti)-N. The optimum constitution, i.e., the formation of mainly
Publikováno v:
[1993] Digests of International Magnetics Conference.
Publikováno v:
[1993] Digests of International Magnetics Conference.
Publikováno v:
Solid State Communications. 89:645-646
Hysteresis, remanence and positive magnetization in the magnetization curves of Mn-substituted LaBa2Cu3O7−δ high Tc superconductors are connected with a combined Abrikosov- and spin-glass state.