Showing 2000 · cond-mat.mtrl-sciShow all

6 papers · 2 filters

cond-mat.mtrl-sci2000★ 11 cited

Size effects on excitons in nano-rings

Hui Hu, Dai-Jun Li, Jia-Lin Zhu +1

The size effects of an exciton in a nano-ring are investigated theoretically by using an effective-mass Hamiltonian which can be separated in terms of the center-of-mass and relati…

cond-mat.mtrl-sci2000★ 7 cited

Eight-potential-well order-disorder ferroelectric model and effects of random fields

Zhi-Rong Liu, Bing-Lin Gu, Xiao-Wen Zhang

An eight-potential-well order-disorder ferroelectric model was presented and the phase transition was studied under the mean-field approximation. It was shown that the two-body int…

cond-mat.mtrl-sci2000★ 8 cited

The structure relaxation of carbon nanotube

Xin Zhou, Hu Chen, Jianjun Zhou +1

A simple macroscopic continuum elasticity theory (CET) is used to calculate the structure relaxation of single-wall carbon nanotube (SWNT), an analytic formula is obtained. We also…

cond-mat.mtrl-sci2000★ 65 cited

Effects of ac-field amplitude on the dielectric susceptibility of relaxors

Zhi-Rong Liu, Bing-Lin Gu, Xiao-Wen Zhang

The thermally activated flips of the local spontaneous polarization in relaxors were simulated to investigate the effects of the applied-ac-field amplitude on the dielectric suscep…

cond-mat.mtrl-sci2000★ 6 cited

CVM studies on the atomic ordering in complex perovskite alloys

Zhi-Rong Liu, Jian-She Liu, Bing-Lin Gu +1

The atomic ordering in complex perovskite alloys is investigated by the cluster variation method (CVM). For the 1/3\{111\}-type ordered structure, the order-disorder phase transiti…

cond-mat.mtrl-sci2000★ 5 cited

Dielectric nonlinearity of relaxor ferroelectric ceramics at low ac drives

Xiao-Wen Zhang, Xi Liu, Zhi-Rong Liu +1

Dielectric nonlinear response of (PbMgNbO)(PbTiO) (0.9PMN-0.1PT) relaxor ceramics was investigated under different ac drive voltages. It was…