Layered antiferromagnetic state in (Nd1-zLaz)Sr2Mn2O7

Yutaka Moritomo, Arao Nakamura, Kenji Ohoyama, Masayoshi Ohashi, Kazuma Hirota

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13 Citations (Scopus)

Abstract

Anisotropic magnetic and transport properties have been investigated for single crystals of (Nd1-zLaz)Sr2Mn2O7. We have derived the magnetic phase diagram against the La concentration z and have found that the low-temperature state is of layered antiferromagnetic with alternating MnO2-sheets. The reentrant-type charge-ordered state is observed in the limited z-region around z = 1.0 due to the released Jahn-Teller distortion. We further investigated magnetotransport properties for these antiferromagnetic manganites, and have found a large negative magnetoresistance, e.g., ρc(H)/ρc(0) ∼ 0.86 and ρab(H)/ρab(0) ∼ 0.88 at μ0H = 1 T.

Original languageEnglish
Pages (from-to)631-636
Number of pages6
Journaljournal of the physical society of japan
Volume68
Issue number2
DOIs
Publication statusPublished - 1999 Feb

Keywords

  • Charge-ordering transition
  • Layered antiferromagnetic state
  • Layered manganites
  • Magnetoresistance

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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    Moritomo, Y., Nakamura, A., Ohoyama, K., Ohashi, M., & Hirota, K. (1999). Layered antiferromagnetic state in (Nd1-zLaz)Sr2Mn2O7. journal of the physical society of japan, 68(2), 631-636. https://doi.org/10.1143/JPSJ.68.631