Observation of Unusual Hysteretic Magnetic Properties of the Rare Earth Intermetallic Compound PrMnSi2: Magnetic Susceptibility, Magnetization, Heat Capacity, and Electronic Band Structure

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• 作者：Sang-Hwan Kim ; Dong-Kyun Seo ; Reinhard K. Kremer ; J&uuml ; rgen Kö ; hler ; Antoine Villesuzanne ; and Myung-Hwan Whangbo
• 刊名：Chemistry of Materials
• 出版年：2005
• 出版时间：July 12, 2005
• 年：2005
• 卷：17
• 期：14
• 页码：3711 - 3716
• 全文大小：284K
• 年卷期：v.17,no.14(July 12, 2005)
• ISSN：1520-5002

文摘

The magnetic properties of the rare earth intermetallic compound PrMnSi₂ were characterized by carryingout magnetic susceptibility, magnetization, and heat capacity measurements and performing APW+lo/LDA+U electronic band structure calculations for several ordered spin states of PrMnSi₂. The temperaturedependence of the magnetic susceptibilities shows strong hysteresis at low magnetic fields and exhibitshysteresis under magnetic fields up to ~5 T. The magnetizations present unusual hysteresis loops as afunction of temperature. The magnetic susceptibility and heat capacity measurements reveal that PrMnSi₂undergoes three magnetic phase transitions, one below ~50 K and two below ~20 K. The probablecauses for the observed anomalous magnetic properties were discussed on the basis of nearly degenerateordered spin states found from electronic structure calculations.