| Budget Amount *help |
¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
Fiscal Year 2014: ¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
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| Outline of Final Research Achievements |
In this project, we investigated multifunctionalities coupled with the spin equilibrium for (n-CnH2n+1)4N[M(II)Fe(III)(mto)3] (M = Mn, Fe, etc.; mto = C2O3S). In this system, we observed the rapid spin equilibrium phenomenon between the high-spin (HS) and low-spin (LS) states at the Fe(III)O3S3 site in (C6H5)4P[Zn(II)Fe(III)(mto)3], in which the time scale of spin equilibrium was estimated at 10^-10 < τ < 10^-7 sec.
In the case of (C6H5)4P[Mn(II)Fe(III)(mto)3], we observed an anomalous stepwise magnetic phase transitions at 23 and 30 K. At 30 K, the Mn(II) spins are magnetically ordered, while the Fe(III) spins are still paramagnetic. Below 23 K, both of the Mn(II) and Fe(III) spins are ferrimagnetically ordered. In the case of (n-C4H9)4N[Fe(II)Fe(III)(mto)3], we observed that the rapid spin equilibrium of the Fe(III)S3O3 site induces the iron valence fluctuation in (n-C4H9)4N[Fe(II)Fe(III)(mto)3].
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