Magnetic properties of compounds

✍ Scribed by Fumio Maruyama; Yasushi Amako

• Publisher: Elsevier Science
• Year: 2009
• Tongue: English
• Weight: 883 KB
• Volume: 149
• Category: Article
• ISSN: 0038-1098
• DOI: 10.1016/j.ssc.2009.08.026

✦ Synopsis

The magnetic properties of Gd 3 Co 11-x Fe x B 4 for 2 ≤ x ≤ 4 have been investigated using 57 Fe Mössbauer spectroscopy. These compounds have a hexagonal Ce 3 Co 11 B 4 type of structure and are ordered ferrimagnetically for 2 ≤ x ≤ 4 at room temperature. The increase in the weighted average 57 Fe hyperfine field for 2 ≤ x ≤ 4 is 19 kOe at room temperature, whose corresponding Fe moment is 0.13 µ B . In Gd 3 Co 7 Fe 4 B 4 the Fe moments at the 2c, 6i 1 and 6i 2 sites obtained from the 57 Fe hyperfine fields are 1.4, 1.1 and 0 µ B , respectively and the Fe atom at the 6i 2 site has no moment. The weighted average values of the isomer shift decrease with increasing Fe content.