Thermoelectric power in ferromagnetic Pb0.16Sn0.72Mn0.12Te semiconductor

Autor:	V. Osinniy, V. Domukhovski, B. Witkowska, G. V. Lashkarev, Tomasz Story, M. V. Radchenko
Rok vydání:	2002
Předmět:	Materials science Condensed matter physics business.industry Magnetic semiconductor Atmospheric temperature range Condensed Matter Physics Electronic Optical and Magnetic Materials Paramagnetism Semiconductor Ferromagnetism Seebeck coefficient Thermoelectric effect Curie temperature business
Zdroj:	Journal of Magnetism and Magnetic Materials. 247:77-82
ISSN:	0304-8853
DOI:	10.1016/s0304-8853(02)00153-1
Popis:	Thermoelectric power was studied in semimagnetic (diluted magnetic) Pb 1− x−y Sn y Mn x Te ( x =0.12, y =0.72) semiconductor in the temperature range T =10–100 K covering both ferromagnetic and paramagnetic range of temperatures of this material. In addition to standard diffusion contribution to the thermoelectric power ( α D ∝ T ), we found in PbSnMnTe an additional “magnetic” contribution ( α FM ). Employing the effect of carrier-concentration-controlled ferromagnetism in PbSnMnTe, we demonstrate that the temperature dependence of α FM ( T ) shows a clear maximum at the ferromagnetic Curie temperature. This experimental finding is discussed in terms of Kasuya model for the thermoelectric properties of diluted magnetic metallic systems with sd-exchange interaction.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::85191aec0fc0747d6f2b58e2c3d19175 https://doi.org/10.1016/s0304-8853(02)00153-1 Zobrazit plný text záznamu Full Text from ScienceDirect