The ferromagnetic nano- particle which is used in the manufacturing method of the organic substrate particle which is connected with the change possible ferromagnetic nano- particle which has the mean particle diameter of the range of 1000nm from 10, first it is non ferromagnetism, but when temperature goes down, the nano- particle which is the nano- particle which becomes ferromagnetism, is non ferromagnetism in the form which first is dispersed connects with the organic substrate particle, and the nano- particle which is connected with the substrate particle becomes ferromagnetism as the result where temperature goes down.< Selective figure >Figure 110から1000nmの範囲の平均粒子径を持つ切換え可能な強磁性ナノ粒子と結合した有機基質粒子の調製方法において、使用する強磁性ナノ粒子は、最初は非強磁性であるが温度が下がると強磁性となるナノ粒子であり、最初に分散した形で非強磁性であるナノ粒子が有機基質粒子と結合し、そして基質粒子と結合したナノ粒子は温度が下がる結果として強磁性となる。【選択図】図1
