Preparation, Electronic, and Magnetic Properties of Sr3V2O6.99

✍ Scribed by J.-G. Lee; K.V. Ramanujachary; M. Greenblatt

• Publisher: Elsevier Science
• Year: 1995
• Tongue: English
• Weight: 351 KB
• Volume: 118
• Category: Article
• ISSN: 0022-4596
• DOI: 10.1006/jssc.1995.1347

✦ Synopsis

Synthesis, electrical, and magnetic properties of a layered perovskite-related compound, (\mathrm{Sr}{3} \mathrm{~V}{2} \mathrm{O}_{6.99}), are reported. Powder (\mathrm{X})-ray diffraction analysis confirmed the body-centered tetragonal (I4/ (\mathrm{mmm})) structure as proposed earlier. The electrical resistivity of the sample is (0.054 \Omega \cdot \mathrm{cm}) at room temperature and decreases with temperature down to (15 \mathrm{~K}), with a (T^{2}) dependence in the range 15-150 K. The temperature-dependent magnetic susceptibility shows a small cusp at (\sim 110 \mathrm{~K}). Spin-glass-like behavior is observed in the temperature range (5-26 \mathrm{~K}) as evidenced by irreversibility of the zero-field-cooled and field-cooled magnetization curves. The spin-glass dynamics of the sample was confirmed via the measurement of the AC susceptibility. The observed electrical and magnetic properties suggest disorder-induced localization of the defects at low temperatures. 1995 Academic Press, Inc.