The ground state properties of the half-filled antiferromagnetic Kondo Lattice are discussed by using the static approximation of the functional integral method. Anti ferromagnetic phase and Kondo phase have been obtained in weak-coupling (J < 0.155) and strong-coupling (J > 0.345) regimes, respectively. A stable phase of coexistence of antiferromagnetism and Kondo effect exists in the intermediate-coupling regime (0.155 < J < 0.345) with Lower energy. The magnetic moments are reduced by Kondo effect in roexistent phase, as observed in experiments.

We find that the changes of curvatures of the conduction band minima have a crucial influence on the pressure behavious of N and NN_j traps in Gap. The results calculated with a simple model representing such pressure variations of the conduction band show very good agreement with the experiments.

Using the ultrasonic pulse echo overlap technique, we have measured the temperature dependence of the elastic constant C₃₃ of LiKSO₄ crystal. The abrupt change of C₃₃ occurs at 60°C, and there is a large temperature hysteresis. On repeated experiments, this abrupt peak of C₃₃ reduces successively. But after a certain time of "seasoning", it appears again.

The pressure effects on crystallization temperature and activation energy of crystallization were measured up to 3GPa. A non-monotonic dependence between them was observed. The results are discussed by the consideration of pressure induced variations of nucleation and growth mechanisms.

We report here the acoustic local mode and TA band mode for the lattice vibration of the mixed crystals Cd_1-xMn_xTe as observed by very far infrared spectra. The occurence of the acoustic local mode and the weakly optical activity of TA mode induced by crystalline-mixing are discussed in light of the defect lattice dynamics.

Experiments on a nonlinear oscillator reveal the same periodic structure as that in one-dimensional unimodal maps and a simple method is found to assign words from a symbolic dynamics of two letters to the periods observed in experiments. This paper gives plentiful patterns of U-sequence, including period-tripling patterns R*RL, RL*RL and RL²*RL. Spectral analysis gives a confirmation of the patterns.

The potential of the one-dimension master equation with both the one-step and the two-step processes is obtained in the leading order of the system-size Ω.

The crystallization temperature of amorphous Ge(a-Ge) in a-Ge/polycrystalline Au(p-Au) films is much lower than that in a-Ge/monocrystalline Au(m-Au) films. In order to explain this phenomenon it is suggested that the grain boundary triple points of p-Au films are the favourable nucleation positions. The favourable crystallization regions in a-Ge/p-Au films are related to the agglomeration of p-Au films. The crystallization temperature of Ge-Au alloy films is lower than that of a-Ge/p-Au films when Au content in alloy films is less than 35wt%, and is higher when Au content is more than 35wt%.

The correct analytic continuation formulae of H^P functions on the upper half-plane are given and used to extrapolate the transfer function of a spherical piezoelectric receiver. The results obtained by extrapolation are in good agreement with the theoretical ones.

Some luminescence of Er³⁺ ions in the fluoride glasses are studied. One of the cross-relaxations of Er³⁺ ions is between and ²H_11/2-⁴I_9/2 and ⁴I_{15 /2} -⁴I_13/2. The Er³⁺ - Er³⁺ ions interaction causing the cross-relaxation in the fluoride glasses is an electric dipole-dipole interaction.

The susceptibilities and the magnetic hysteresis loops of pure and Co Coated α-Fe₂O₃ have been measured. It is found that the Morin transition temperature of α-Fe₂O₃ is influenced and the coercivity is increased obviously by a Co coating. The results of neutron diffraction are in agreement with this observation.

In this paper we report the ferroelectric glass-ceramics possessing both piezoelectric and pyroelectric properties. The properties can be comparable to those of corresponding ceramics or single crystals.