Field Induced Unusual Magnetic Behavior at Low Temperature in Pr0.67Ca0.33MnO3

PEKTAS M., GENÇER H., İZGİ T., KOLAT V. S., ATALAY S.

ACTA PHYSICA POLONICA A, cilt.125, sa.2, ss.217-219, 2014 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 125 Sayı: 2
  • Basım Tarihi: 2014
  • Doi Numarası: 10.12693/aphyspola.125.217
  • Dergi Adı: ACTA PHYSICA POLONICA A
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.217-219
  • İnönü Üniversitesi Adresli: Evet

Özet

In this study, magnetic properties of Pr0.67Ca0.33MnO3 compound were investigated in detail. The magnetization versus temperature (M-T) curve showed that this material undergoes a charge order transition at 200 K. A more pronounced FM phase appeared below 56 K. At T = 5 K, a field induced sharp step like magnetisation transition associated with phase separation was observed. However, after application of 7 T magnetic field at 5 K, the magnetic behaviour of sample was changed completely and full FM behaviour was observed. The more interesting is that the sample remains in the FM state and does not retrieve the initial magnetic state until warmed up to charge order transition temperature. Large negative magnetic entropy change (-26.18 J/(kg K) at 38 K and 5 T) was attributed to step like magnetisation transition.