Relation between crystal and magnetic structures of layered manganite La2-2cursive greek chiSr1+2cursive greek chiMn2O7 (0.30 ≤ cursive greek chi ≤ 0.50)

Masato Kubota, Hirofumi Fujioka, Kazuma Hirota, Kenji Ohoyama, Yutaka Moritomo, Hideki Yoshizawa, Yasuo Endoh

研究成果: Article査読

136 被引用数 (Scopus)


The magnetic phase diagram of La2-2cursive Greek chiSr1+2cursive Greek chiMn2O7 (0.30 ≤ cursive Greek chi ≤ 0.50) was reexamined from the point of view of the crystal structure, particularly the Jahn-Teller (JT) distortion ΔJT of Mn-O6 octahedra, i.e., the ratio of the averaged apical Mn-O bond length to the equatorial Mn-O bond length. We have found that ΔJT decreases with increasing hole concentration cursive Greek chi, while the canting angle between neighboring planes continuously increases from 0° (planar ferromagnet: 0.32 ≤ cursive Greek chi ≤ 0.38) to 180° (A-type antiferromagnet (AFM): cursive Greek chi = 0.48). The dominance of the A-type AFM structure with the decrease of ΔJT can be ascribed to the change in the eg orbital state from d3z2-cursive Greek chi2 to dcursive Greek chi2-y2.

ジャーナルjournal of the physical society of japan
出版ステータスPublished - 2000 6

ASJC Scopus subject areas

  • Physics and Astronomy(all)

フィンガープリント 「Relation between crystal and magnetic structures of layered manganite La<sub>2-2cursive greek chi</sub>Sr<sub>1+2cursive greek chi</sub>Mn<sub>2</sub>O<sub>7</sub> (0.30 ≤ cursive greek chi ≤ 0.50)」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。