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Exchange interaction plays an important role on magnetic properties of nanocomposite magnets consisting of hard- and soft-magnetic phases.Here the exchange interaction in the Sin-Co/Co (and Fe_(65)Co_(35)) magnetic films was characterized by measuring static (m_r(H)) and demagnetized (m_d(H)) remanence curves.According to conventional method:δm(H)=m_d(H)-[1-2m_r(H)],the exchange interaction was evaluated.The switching fields H′_p and H_p,at which static (m_r(H)) and demagnetized (m_d(H)) remanence show the fastest change,were identified.The relative ratioη=(H_p-H′_p)/H_p of switching fields H′_p and H_p has a linear relationship with the maximum valueδm_(max) ofδm(H) curves,proposing an alternative way to characterize the exchange interaction.
Exchange interaction plays an important role on magnetic properties of nanocomposite magnets consisting of hard- and soft-magnetic phases. Here the exchange interaction in the Sin-Co / Co (and Fe_ (65) Co_ (35)) magnetic films was characterized by measuring (m_r (H)) and demagnetized (m_d (H)) remanence curves. Based on conventional method: δm (H) = m_d (H) - [1-2m_r (H)], the exchange interaction was taken. fields H’_p and H_p, at which the static (m_r H) and demagnetized (m_d (H)) remanence show the fastest change, are identified. relative ratio η = (H_p-H’_p) / H_p of switching fields H ’_p and H_p has a linear relationship with the maximum value δm_ (max) of δm (H) curves, proposing an alternative way to characterize the exchange interaction.