随着我国在国外总承包(EPC)水泥工程项目的不断增多,需要在国内采购并出口的水泥设备也在增多,而在国外承包建设一条现代化水泥生产线,不仅需要的设备类型多,对设备质量要求也很高。如果设备在国外现场出现问题,不仅处理和解决困难,还...随着我国在国外总承包(EPC)水泥工程项目的不断增多,需要在国内采购并出口的水泥设备也在增多,而在国外承包建设一条现代化水泥生产线,不仅需要的设备类型多,对设备质量要求也很高。如果设备在国外现场出现问题,不仅处理和解决困难,还会对整个工程项目产生不利的影响。由于目前我国很多设备制造商的设备质量并不能完全达到合同要求,因此,总承包商应编制出一份完整的采购设备的质量控制计划(QCP,即Quality Control Plan)。展开更多
We present low-temperature magnetization, magnetoresistance and specific heat measurements on the Kondo lattice compound CePt_3P under applied magnetic fields up to 9.0 T. At zero field, CePt_3P exhibits a moderately ...We present low-temperature magnetization, magnetoresistance and specific heat measurements on the Kondo lattice compound CePt_3P under applied magnetic fields up to 9.0 T. At zero field, CePt_3P exhibits a moderately enhanced Sommerfeld coefficient of electronic specific heat γCe=86 mJ/mol·K^2 as well as two successive magnetic transitions of Ce 4f moments: an antiferromagnetic ordering at T_(N_1) = 3.0 K and a spin reorientation at T_(N_2)=1.9 K. The value of T_(N_1) shifts to lower temperature as magnetic field increases, and it is ultimately suppressed around B_c ～3.0 T at 1.5 K. No evidence of non-Fermi liquid behavior is observed around B_c down to the lowest temperature measured. Moreover, γ decreases monotonously with increasing the magnetic field. On the other hand, the electrical resistivity shows an anomalous temperature dependence ρ∝T^n with the exponent n decreasing monotonously from ～2.6 around B_c down to ～1.7 for B = 9.0 T. The T-B phase diagram constructed from the present experimental results of CePt_3P does not match the quantum criticality scenario of heavy fermion systems.展开更多
文摘随着我国在国外总承包(EPC)水泥工程项目的不断增多,需要在国内采购并出口的水泥设备也在增多,而在国外承包建设一条现代化水泥生产线,不仅需要的设备类型多,对设备质量要求也很高。如果设备在国外现场出现问题,不仅处理和解决困难,还会对整个工程项目产生不利的影响。由于目前我国很多设备制造商的设备质量并不能完全达到合同要求,因此,总承包商应编制出一份完整的采购设备的质量控制计划(QCP,即Quality Control Plan)。
基金Supported by the Zhejiang Provincial Natural Science Foundation of China under Grant No LQ19A040006the Scientific Research Fund of Zhejiang Provincial Education Department under Grant No Y201840160
文摘We present low-temperature magnetization, magnetoresistance and specific heat measurements on the Kondo lattice compound CePt_3P under applied magnetic fields up to 9.0 T. At zero field, CePt_3P exhibits a moderately enhanced Sommerfeld coefficient of electronic specific heat γCe=86 mJ/mol·K^2 as well as two successive magnetic transitions of Ce 4f moments: an antiferromagnetic ordering at T_(N_1) = 3.0 K and a spin reorientation at T_(N_2)=1.9 K. The value of T_(N_1) shifts to lower temperature as magnetic field increases, and it is ultimately suppressed around B_c ～3.0 T at 1.5 K. No evidence of non-Fermi liquid behavior is observed around B_c down to the lowest temperature measured. Moreover, γ decreases monotonously with increasing the magnetic field. On the other hand, the electrical resistivity shows an anomalous temperature dependence ρ∝T^n with the exponent n decreasing monotonously from ～2.6 around B_c down to ～1.7 for B = 9.0 T. The T-B phase diagram constructed from the present experimental results of CePt_3P does not match the quantum criticality scenario of heavy fermion systems.
