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Descripción
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| We report changes of magnetic properties of the heavy-fermion YbNi2 crystalline alloy when submitted to high-energy ball milling. Due to milling process, the ferromagnetic transition at TC =10.4 K in bulk alloy practically disappears and an upturn ongoing to lower temperatures indicates the existence of a magnetic transition at T*= 3.2 K in the nanometric sample. The Orbach-Aminov spin-lattice relaxation processes with the involvement of the first excited crystalline electric field level of Yb3+ at 75 K dominate the electron spin dynamics in the paramagnetic phase of the bulk. For T < TC, a comparative study of the temperature dependent magnetic properties and electron spin resonance parameters of nano and bulk samples shows a shift of the electron spin resonance field positions strongly towards high fields related to the magnetic inhomogeneity of the alloy induced by the milling process. | |
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Internacional
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Si |
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JCR del ISI
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Si |
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Título de la revista
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Fizika Metallov I Metallovedenie |
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ISSN
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0015-3230 |
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Factor de impacto JCR
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Información de impacto
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Volumen
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118 |
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DOI
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10.7868/S0015323017040040 |
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Número de revista
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4 |
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Desde la página
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359 |
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Hasta la página
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363 |
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Mes
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Ranking
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