Room-temperature ageing effects on the magnetic properties of mechanically milled SmCo5
1999; Elsevier BV; Volume: 12; Issue: 5-8 Linguagem: Inglês
10.1016/s0965-9773(99)00259-7
ISSN1872-9150
AutoresDiandra L. Leslie‐Pelecky, E.M. Kirkpatrick, Richard Schalek,
Tópico(s)Magnetic and transport properties of perovskites and related materials
ResumoAbstract Mechanical milling of ferromagnetic SmCo5 produces dramatic increases in coercivity or short (15 minutes to 2 hours) milling times. The milled nanostructured material is highly metastable and undergoes room-temperature recovery during the first two weeks after fabrication. Although changes in the coercivity with ageing time are significant, the diffracting crystallite size determined from x-ray diffraction remains constant. We conclude that disorder is a primary determinant of the coercivity of mechanically milled alloys.
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