• DOI:10.1103/PHYSREVB.72.144421
• Corpus ID: 53693031

Effect of pressure on single-chain magnets with repeating units of the MnIII-NiII-MnIII trimer

@article{Mito2005EffectOP,
  title={Effect of pressure on single-chain magnets with repeating units of the MnIII-NiII-MnIII trimer},
  author={Masaki Mito and Hiroyuki Deguchi and Takayuki Tajiri and Seishi Takagi and Masahiro Yamashita and Hitoshi Miyasaka},
  journal={Physical Review B},
  year={2005},
  volume={72},
  pages={144421-1-144421-9}
}

• M. Mito, H. Deguchi, +3 authors H. Miyasaka
• Published 24 October 2005
• Chemistry
• Physical Review B

The single-chain magnet L: intrachain attaching ligand of Ni II ion; A −1 : interchain counteranion (cid:2) is a ferromagnetic one-dimensional network system with repeating units of the Mn III -Ni II -Mn III trimer which itself behaves as a single-molecule magnet with an S =3 spin ground state and negative uniaxial single-ion anisotropy (cid:1) D (cid:2) parallel to the bridging direction. The slow relaxation of the magnetic moment in this SCM system originates in an energy barrier for spin reversal (cid:1) (cid:1) E (cid:2) , which is closely related to the ferromagnetic interaction between the trimers (cid:1) J trimer (cid:2) as well as to the D of the trimer. We have investigated the effects of pressure on three compounds representative of the above SCM family through ac susceptibility measurements under hydrostatic pressures up to P =13.5 kbar and crystal structural analysis experiments up to P =20.0 kbar, and have observed a pronounced enlargement of (cid:1) E when J was artificially increased. The application of hydrostatic pressure brought about the systematic enhancement of (cid:1) E (cid:1) a maximum increase of 10% within the pressure region of the experiments (cid:2) . The pressure dependence of (cid:1) E varied according to the kind of attaching ligand L involved and the intrachain structure, and we have experimentally found that isotropic lattice shrinkage is desirable if a continuous increase of (cid:1) E in this system is aimed at.