The effects of prolonged milling in air and vacuum on BaFe12O19 ionic crystal structure and particles morphology have been analysed. X-ray diffraction, scanning electron microscopy and thermal analysis experiments show that for vacuum-milled material the ordered structure transforms progressively into a stable disordered nanocrystalline phase. For air-milled samples, apart from structural transformation, chemical decomposition was found.
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Univ Coll New S Wales, Sch Phys, Australian Def Force Acad, Canberra, ACT 2600, AustraliaUniv Coll New S Wales, Sch Phys, Australian Def Force Acad, Canberra, ACT 2600, Australia
Campbell, SJ
Wu, E
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机构:Univ Coll New S Wales, Sch Phys, Australian Def Force Acad, Canberra, ACT 2600, Australia
Wu, E
Kaczmarek, WA
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机构:Univ Coll New S Wales, Sch Phys, Australian Def Force Acad, Canberra, ACT 2600, Australia
Kaczmarek, WA
Wang, G
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机构:Univ Coll New S Wales, Sch Phys, Australian Def Force Acad, Canberra, ACT 2600, Australia