TY - JOUR
T1 - Evolution of magnetic domain patterns associated with field-induced DHCP-HCP transformation of Co-1.2%Fe alloy
AU - Tanaka, Toshiro
AU - Takahashi, Migaku
AU - Kadowaki, Shizuo
N1 - Copyright:
Copyright 2017 Elsevier B.V., All rights reserved.
PY - 2000
Y1 - 2000
N2 - The magnetic domain patterns of the pure double-hcp (dhcp) phase and hcp-mixed-dhcp phase of Co-1.2%Fe alloy single crystals were investigated to clarify the nucleation and growth process of the hcp phase from the dhcp phase in the external magnetic field. The thin hcp phases appeared to be parallel to the c-plane in the pure dhcp phase at phase transformation. The domain observation failed to detect the nucleation site of the dhcp-to-hcp phase transformation. The nucleation site and growing process of the hcp phase are discussed with respect to the effect of the shear stress induced by magnetostriction. The calculated maximum shear stress induced by magnetostriction was found to be on the same order of the resolved shear stress of Co, and it could be realized in the domain walls but not in the domains. This shear stress in the domain walls might be the motivating force in generating nucleation sites of hcp phase.
AB - The magnetic domain patterns of the pure double-hcp (dhcp) phase and hcp-mixed-dhcp phase of Co-1.2%Fe alloy single crystals were investigated to clarify the nucleation and growth process of the hcp phase from the dhcp phase in the external magnetic field. The thin hcp phases appeared to be parallel to the c-plane in the pure dhcp phase at phase transformation. The domain observation failed to detect the nucleation site of the dhcp-to-hcp phase transformation. The nucleation site and growing process of the hcp phase are discussed with respect to the effect of the shear stress induced by magnetostriction. The calculated maximum shear stress induced by magnetostriction was found to be on the same order of the resolved shear stress of Co, and it could be realized in the domain walls but not in the domains. This shear stress in the domain walls might be the motivating force in generating nucleation sites of hcp phase.
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U2 - 10.2320/matertrans1989.41.950
DO - 10.2320/matertrans1989.41.950
M3 - Article
AN - SCOPUS:0034249406
VL - 41
SP - 950
EP - 954
JO - Materials Transactions
JF - Materials Transactions
SN - 1345-9678
IS - 8
ER -