Abstract
Lattice and magnetic properties are investigated for 3% Ru- and Cr-doped Nd1/2Ca1/2MnO3. The parent Nd 1/2Ca1/2MnO3 is a charge-ordered insulator (TCO = 250 K). With decreasing temperature below ≈210 K, these compounds are separated into two perovskite phases, that is, the long-c and short-c phases. The long-c region shows a ferromagnetic transition at T C ≈ 210 K for the Ru-doped compound and ≈130 K for the Cr-doped compound, while the short-c region shows antiferromagnetic transition at TN ≈ 150 K for Ru and ≈110 K for Cr. We discuss the origin of the enhanced Tc for the Ru-doped compound in terms of the effective one-electron bandwidth W of the eg-band.
| Original language | English |
|---|---|
| Pages (from-to) | 1626-1629 |
| Number of pages | 4 |
| Journal | journal of the physical society of japan |
| Volume | 71 |
| Issue number | 7 |
| DOIs | |
| Publication status | Published - 2002 Jul 1 |
Keywords
- B-site substitution
- Neutron powder diffraction
- Perovskite manganite
- Rietveld analysis
ASJC Scopus subject areas
- Physics and Astronomy(all)
Fingerprint Dive into the research topics of 'Neutron investigation of Ru-doped Nd<sub>1/2</sub>Ca<sub>1/2</sub>MnO <sub>3</sub> - Comparison with Cr-doped Nd<sub>1/2</sub>Ca<sub>1/2</sub>MnO <sub>3</sub>'. Together they form a unique fingerprint.
Cite this
Moritomo, Y., Machidai, A., Nonobe, T., & Ohoyama, K. (2002). Neutron investigation of Ru-doped Nd1/2Ca1/2MnO 3 - Comparison with Cr-doped Nd1/2Ca1/2MnO 3. journal of the physical society of japan, 71(7), 1626-1629. https://doi.org/10.1143/JPSJ.71.1626