Magnetization of Mn1–x Fe x Si in high magnetic fields up to 50 T: Possible evidence of a field-induced Griffiths phase
| Autor: | N. E. Sluchanko, S. V. Demishev, S. V. Grigoriev, V. V. Moshchalkov, Johan Vanacken, A. N. Samarin, N. M. Chubova, Junwei Huang, V. V. Glushkov, I. I. Lobanova, Vadim Dyadkin, M. Yu. Kagan |
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| Rok vydání: | 2016 |
| Předmět: |
Materials science
Strongly Correlated Electrons (cond-mat.str-el) Physics and Astronomy (miscellaneous) Condensed matter physics Field (physics) Solid-state physics FOS: Physical sciences 02 engineering and technology 021001 nanoscience & nanotechnology 01 natural sciences law.invention Magnetic field SQUID Condensed Matter - Strongly Correlated Electrons Magnetization Paramagnetism law Phase (matter) 0103 physical sciences 010306 general physics 0210 nano-technology Solid solution |
| Zdroj: | JETP Letters. 104:116-123 |
| ISSN: | 1090-6487 0021-3640 |
| DOI: | 10.1134/s0021364016140022 |
| Popis: | Magnetic properties of single crystals of Mn$_{1-x}$Fe$_x$Si solid solutions with $x < 0.2$ are investigated by pulsed field technique in magnetic fields up to 50 T. It is shown that magnetization of Mn$_{1-x}$Fe$_x$Si in the paramagnetic phase follows power law $M(B) \sim B^\alpha$ with the exponents $\alpha \sim 0.33-0.5$, which starts above characteristic fields $B_c \sim 1.5-7$ T depending on the sample composition and lasts up to highest used magnetic field. Analysis of magnetization data including SQUID measurements in magnetic fields below 5 T suggests that this anomalous behavior may be likely attributed to the formation of a field-induced Griffiths phase in the presence of spin-polaron effects. Comment: to be published in JETP Letters |
| Databáze: | OpenAIRE |
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