Large Magnetoresistance Effects in Self-Doped La0.936Mn0.982O3Single Crystals

✍ Scribed by W.H. McCarroll; K.V. Ramanujachary; M. Greenblatt; F. Cosandey

• Publisher: Elsevier Science
• Year: 1998
• Tongue: English
• Weight: 529 KB
• Volume: 136
• Category: Article
• ISSN: 0022-4596
• DOI: 10.1006/jssc.1998.7810

✦ Synopsis

We report here for the first time colossal magnetoresistance effects (& &77% MR at 5 T) in bulk single crystals of self-doped La 0.936 Mn 0.982 O 3 prepared by fused-salt electrolysis. The crystals form with rhombohedral symmetry and show a high degree of perfection by electron backscatter diffraction. The maximum in the MR% was observed in the vicinity of & &250 K where the crystals undergo a sharp insulator-to-metal as well as a paramagnetic-to-ferromagnetic transition.