Bond Dilution Effects on Bethe Lattice the Spin-1 Blume-Capel Model

• 来源期刊: 理论物理通讯（英文版）
• 年，卷（期）: 2017,（9）
• 页码范围: 361-365
• 页数: 5页
• 语种: 英文
• DOI: 10.1088/0253-6102/68/3/361

摘要

The bond dilution effects are investigated for the spin-1 Blume-Capel model on the Bethe lattice by using the exact recursion relations.The bilinear interaction parameter is either turned on ferromagnetically with probability p or turned off with probability 1-p between the nearest-neighbor spins.The thermal variations of the order-parameters are studied in detail to obtain the phase diagrams on the possible planes spanned by the temperature (T),probability (p) and crystal field (D) for the coordination numbers q =3,4,and 6.The lines of the second-order phase transitions,Tc-lines,combined with the first-order ones,Tt-lines,at the tricritical points (TCP) are always found for any p and q on the (T,D)-planes.It is also found that the model gives only Tc-lines,Tc-lines combined with the Tt-lines at the TCP's and only Tt-lines with the consecutively decreasing values of D on the (T,p)-planes for all q.