Technical Report of ISSP Ser. A: Number 3227

Abstract

The magnetic properties of PrFeGe3 which exhibit no phase transitions from 0.5 K to room temperature are reported. A Curie-Weiss fit of the magnetic susceptibility above 50 K gave a Weiss temperature of -1.6 K and an effective moment of 3.47 mu(sub B)/Pr which is close to the value of Pr(3+) free ion. The T-linear term gamma of the low-temperature specific heat is 17 mJ/mol-K(exp 2), and the Debye temperature theta(sub D) obtained from the specific heat is 230 K. The magnetic contribution to the specific heat and the electrical resistivity may be explained by a Crystalline Electric Field (CEF) level scheme which extends over hundreds of degrees.

0.5Kから室温まで相転移を示さないPrFeGe3の磁気特性を報告した。50 K以上の温度における磁化率のCurie-Weiss適合は-1.6KのWeiss温度およびPr(3+)自由イオン値に近い3.47μ(sub B)/Prの有効モーメントを示した。低温比熱のT線形項γは17mJ/mol-K(exp 2)であり、比熱から得たDebye温度θ(sub D)は230Kであった。比熱および電気抵抗性への磁気的な寄与は数百度にわたる結晶電場(CEF)準位スキームにより解釈できる。