Under multiple extreme conditions, such as low temperature, high pressure, magnetic field and electic field, charge and orbital ordered/fluctuated states studied by resonant and non-resonant x-ray scattering technique.

1. X-ray anomalous scattering study of a charge-ordered state in NaV2O5
2. Quantitative determination of the atomic scattering tensor in orbitally ordered YTiO3 by using resonant x-ray scattering technique
3. Orbitally ordered state in Y1-xCaxTiO3 (0<x<0.5)
4. Antiferro-quadrupole Ordering of CeB6 Studied by Resonant X-ray Scattering
5. Resonant x-ray scattering in LaMnO3
6. Charge and orbital ordered states in Nd1-xSr1+xMnO4 (x=0.67, 0.75)
7. Valence fluctuated state in Yb4As3
8. Charge distribution of Mn ion in artificial superlattices [(LaMnO3)m(SrMnO3)m]n
9. Orbital Ordering of Intermediate-Spin State of Co³⁺ in Sr₃YCo₄O_10.5