2005/08/16 by Kausik Sengupta, Kartik K. Iyer, E. V. Sampathkumaran · 31 citations
Materials Science · Physics and Astronomy · #Condensed matter physics #Electrical resistivity and conductivity #Entropy (arrow of time) #Heat capacity #Magnetic Properties of Alloys #Magnetic and transport properties of perovskites and related materials #Magnetic field #Magnetic refrigeration #Magnetization #Magnetoresistance #Materials science #Paramagnetism #Physics #Quantum mechanics #Rare-earth and actinide compounds #Thermodynamics #cond-mat.mtrl-sci #cond-mat.str-el
paper · pdf · doi:10.1103/physrevb.72.054422
published in Physical Review B 72(5) (American Physical Society) · Phys. Rev. 65 (2005) 491
openalex publication_date 2005/08/16 · arxiv created 2005/09/05 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
The electrical resistivity, magnetization, and heat-capacity behavior of the Gd-based compounds, Gd2Co2Al, Gd2Co2Ga, and Gd7Rh3, ordering magnetically at TC=78\phantom\rule0.3em0exK, TC=76\phantom\rule0.3em0exK, and TN=140\phantom\rule0.3em0exK, have been investigated as a function of temperature and magnetic field. All these compounds are found to show large magnetoresistance (with a negative sign) in the paramagnetic state at rather high temperatures with the magnitude peaking at respective magnetic ordering temperatures. There is a corresponding behavior in the magnetocaloric effect as inferred from the entropy derived from these data.