57Fe Mössbauer studies of BiPbSr2FeO6

✍ Scribed by T. Okada; Y. Kobayashi; K. Asai; N. Yamada; T. Yamadaya

• Publisher: Elsevier Science
• Year: 1991
• Tongue: English
• Weight: 195 KB
• Volume: 185-189
• Category: Article
• ISSN: 0921-4534
• DOI: 10.1016/0921-4534(91)91786-4

✦ Synopsis

5-We M~ssbauer and magnetic measurements of BiPbSr2FeO6 calcinated in air (sample 1)or in N2 gas (sample II) were made.

Sample I is a weak-ferromagnet with T~=240 K, The temperature dependence of the magnetization shows an anomaly at 90 K. A ta~e effect of the magnetic field cooling is observed. Fe ions are in mvMent state and 5~e nuclei feet hyperfine magnetic field of 50 T at low temperature. Sample I1 is a weak fermmagnet with TN=300 K, but neither the anomaly at 90 K nor the field-cooting effect is detected fo¢ this sample.