TY - JOUR
T1 - Microstructures of Ta-inserted SmCo5/Fe nanocomposite thick film magnets
AU - Itakura, Masaru
AU - Murayama, Shin ichi
AU - Mitsuhara, Masatoshi
AU - Nishida, Minoru
AU - Koga, Hiroaki
AU - Nakano, Masaki
AU - Fukunaga, Hirotoshi
N1 - Funding Information:
This work was partly supported by the New Energy and Industrial Technology Development Organization (NEDO), Japan, and was performed as an extension of a collaborative research supported by the Nanotechnology Platform Project from the Ministry of Education, Culture, Sports, Science and Technology, Japan.
Publisher Copyright:
©2017 The Japan Institute of Metals and Materials.
PY - 2017
Y1 - 2017
N2 - Ta-inserted SmCo5/Fe nanocomposite thick film magnets were synthesized by high-speed pulsed laser deposition followed by pulse annealing. The microstructures of the film magnets were characterized by high-resolution scanning electron microscopy and scanning transmission electron microscopy. The as-deposited thick film possessed a multilayered Sm-Co/Ta/α-Fe/Ta structure with amorphous Sm-Co layers and [110]-oriented crystalline α-Fe layers. After pulse annealing, many fine grains of Laves phase TaCo2 were formed, and then the multilayered structure was converted to a granular nanocomposite thick film magnet composed of fine crystalline grains of Sm(Co, Fe)5, α-(Fe, Co), and TaCo2. The volume fractions and grain sizes of hard magnetic Sm(Co, Fe)5, soft magnetic α-(Fe, Co), and TaCo2 were controlled by the thicknesses of the Ta layer, producing a nanocomposite thick film magnet with good exchange coupling.
AB - Ta-inserted SmCo5/Fe nanocomposite thick film magnets were synthesized by high-speed pulsed laser deposition followed by pulse annealing. The microstructures of the film magnets were characterized by high-resolution scanning electron microscopy and scanning transmission electron microscopy. The as-deposited thick film possessed a multilayered Sm-Co/Ta/α-Fe/Ta structure with amorphous Sm-Co layers and [110]-oriented crystalline α-Fe layers. After pulse annealing, many fine grains of Laves phase TaCo2 were formed, and then the multilayered structure was converted to a granular nanocomposite thick film magnet composed of fine crystalline grains of Sm(Co, Fe)5, α-(Fe, Co), and TaCo2. The volume fractions and grain sizes of hard magnetic Sm(Co, Fe)5, soft magnetic α-(Fe, Co), and TaCo2 were controlled by the thicknesses of the Ta layer, producing a nanocomposite thick film magnet with good exchange coupling.
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U2 - 10.2320/matertrans.M2017035
DO - 10.2320/matertrans.M2017035
M3 - Article
AN - SCOPUS:85030098972
SN - 0916-1821
VL - 58
SP - 1351
EP - 1355
JO - Materials Transactions
JF - Materials Transactions
IS - 10
ER -