Magnetoresistance and magnetocaloric properties of the Pr 0.1Gd0.9Mn2Ge2 compound

DİNÇER İ., Elerman Y.

Physica Scripta, cilt.81, sa.2, 2010 (SCI-Expanded) identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 81 Sayı: 2
  • Basım Tarihi: 2010
  • Doi Numarası: 10.1088/0031-8949/81/02/025703
  • Dergi Adı: Physica Scripta
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Ankara Üniversitesi Adresli: Evet

Özet

The magnetoresistance and magnetocaloric properties of the Pr 0.1Gd0.9Mn2Ge2 compound have been investigated by resistance and magnetization measurements. This compound shows ferrimagnetism, antiferromagnetism, ferromagnetism, antiferromagnetism and paramagnetism with increasing temperature. The metamagnetic transition occurs from antiferromagnetism to ferrimagnetism and ferromagnetism at around T CR and TNinter, respectively. Magnetoresistance is observed at magnetic transition temperature, as expected. Normal and inverse magnetocaloric effects are observed at magnetic transition temperatures. Magnetic entropy changes are calculated from isothermal magnetization curves using Maxwell's relation and Landau theory. Both the calculated magnetic entropy changes are in good agreement. © 2010 The Royal Swedish Academy of Sciences.