CAJ | 학술논문

制备了单相性很好的CuGaxGe1-xO3(x=0,0.01)多晶样品，在不同磁场下对其低温磁化率进行了测量.Ga的掺杂所产生的O空穴导致CuO6八面体的畸变，使b轴的晶格参数变小.Ga掺杂抑制了Spin-Peierls相变的温度并使自旋单态-三重态之间的能隙减小.磁场对能隙有抑制作用，同时使参与Spin-Peierls相变的Cu2+离子数减少，另一方面，磁场能增加不参与双聚化的Cu2+(即Cu2+自由自旋)的数目.
제비료단상성흔호적CuGaxGe1-xO3(x=0,0.01)다정양품，재불동자장하대기저온자화솔진행료측량.Ga적참잡소산생적O공혈도치CuO6팔면체적기변，사b축적정격삼수변소.Ga참잡억제료Spin-Peierls상변적온도병사자선단태-삼중태지간적능극감소.자장대능극유억제작용，동시사삼여Spin-Peierls상변적Cu2+리자수감소，령일방면，자장능증가불삼여쌍취화적Cu2+(즉Cu2+자유자선)적수목.
The polycrystalline samples of single-phase CuGaxGe1-xO3(x=0,0.01) are synthesized. Their low-temperature magnetic susceptibility are measured under different magnetic fields. The oxygen holes generated by Ga doping induce the distortion of the CuO6 octahedron, and cause b axis of the crystal lattice to become shorter. Ga doping decreases the spin-Peierls transition temperature and also the energy gap between the spin singlet-state and the triplet-state. The magnetic fields have the effectiveness of inhibiting the energy gap, meanwhile, reducing the spin number of Cu2＋ ions that are involved in the spin-Peierls phase transition. On the other hand, the magnetic field increases the free spin number of Cu2＋ ions.