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Type: Artigo de periódico
Title: Specific heat at low temperatures and magnetic measurements in Nd0.5Sr0.5MnO3 and R0.5Ca0.5MnO3 (R=Nd, Sm, Dy, and Ho) samples
Author: Lopez, J
de Lima, OF
Lisboa, PN
Araujo-Moreira, FM
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. 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 or a distribution of two-level-Schottky anomaly.
Country: EUA
Editor: American Physical Soc
Citation: Physical Review B. American Physical Soc, v. 66, n. 21, 2002.
Rights: aberto
Identifier DOI: 10.1103/PhysRevB.66.214402
Date Issue: 2002
Appears in Collections:Unicamp - Artigos e Outros Documentos

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