We present the structure and anisotropic magnetic and electrical transport properties on the flux-grown PrAlGe single crystal, a recently proposed magnetic Weyl semimetal candidate. From the powder and single-crystal x-ray diffraction analysis, the grown crystal is revealed to crystallize in tetragonal LaPtSi-type structure with space group of I41md. The PrAlGe exhibits strong Ising-type magnetic anisotropy with ferromagnetic moments ∼2.32μB/Pr along easy c-axis below transition temperature Tc ∼ 15 K. Accordingly, anomalous Hall effect (AHE) is observed for field (H) along c axis in contrast to a axis, and large anomalous Hall conductivity value reaches up to ∼680 Ω−1 cm−1 close to the theoretical expected value based on intrinsic Berry-curvature mechanism. Moreover, the linear scaling behaviors between the anomalous Hall resistivity and longitudinal resistivity also support the intrinsic Karplus-Luttinger mechanism as a dominant role on the observed AHE rather than extrinsic scattering mechanism.

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Optical emission spectrographic procedures are described for the estimation of some 60 elements in graphite. Using sodium fluoride as a carrier, the dc arc is employed for a direct examination of powdered graphite, while the copper spark method is used for analysis of the residue after ashing the sample.

Negative magnetization, exchange interaction and possible applications of Cr-doped Co2TiO4 ceramics have been investigated in detail.

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