Specific heat at low temperatures and magnetic measurements in Nd0.5Sr0.5MnO3 and R0.5Ca0.5MnO3 (Nd, Sm, Dy and Ho) samples

Abstract

We studied the magnetization as a function of temperature and magnetic field in the compounds Nd0.5Sr0.5MnO3, Nd0.5Ca0.5MnO3, Sm0.5Ca0.5MnO3, Dy0.5Ca0.5MnO3 and Ho0.5Ca0.5MnO3. Ferromagnetic, antiferromagnetic and charge ordering transition in our samples agreed with previous reports. The intrinsic magnetic moments of Nd3+, Sm3+, Dy3+ and Ho3+ ions experienced a short range order at low temperatures. We also did specific heat measurements with applied magnetic fields between 0 and 9 T and temperatures between 2 and 30 K in all five samples. Below 10 K the specific heat measurements evidenced a Schottky-like anomaly for all samples. However, we could not successfully fit the curves to either a two level nor a distribution of two-level Schottky anomaly.

Submited to PRB, 10 figures

References in corpus (7)

• Hole concentration induced transformation of the magnetic and orbital structure in Nd{1-x}Sr{x}MnO{3}
• Charge, Orbital and Magnetic Order in Nd0.5Ca0.5MnO3
• Specific heat and magnetic order in LaMnO_{3+δ}
• Magnetic shape-memory effects in La2-xSrxCuO4 crystals
• Anomalous field-dependent specific heat in charge-ordered Pr${}_{1-x}$Ca${}_x$MnO${}_3$ and La${}_{0.5}$Ca${}_{0.5}$MnO${}_3$
• Unusual magnetic relaxation behavior in La0.5Ca0.5MnO3 and Nd0.5Sr0.5MnO3
• Study of magnetic and specific heat measurements at low temperatures in Nd0.5Sr0.5MnO3 and Nd0.5Ca0.5MnO3

Cited by in corpus (2)

• Magnetic phases evolution in the LaMn1-xFexO3+y system
• Interplay between Co-3d and Ce-4f magnetism in CeCoAsO