Magnetic and HRTEM studies of iodine intercalated Bi2Sr2CaCu2Oy

✍ Scribed by DM Pooke; T Stoto; Y Kotaka; R Kobayashi; K Kishio

• Publisher: Elsevier Science
• Year: 1994
• Tongue: English
• Weight: 634 KB
• Volume: 235-240
• Category: Article
• ISSN: 0921-4534
• DOI: 10.1016/0921-4534(94)92583-6

✦ Synopsis

Magnetic irreversibility data is presented for iodine intercalated Bi2Sr=CaCthO r single crystals. Iodine transfers charge both to the CuO2 planes and the BiO bilayers. The possibility of enhanced coupling along the c-axis through increased conductivity in the rocksalt block is not borne out in the irreversibility fields, I-~. t, suggesting eith~ that BizSr2CaClhOy is firmly in the 2-dimensional limit, or that any increase in the c-axis coupling is balanced by larger separation of the CuO2 planes. Magnetic relaxation data is also discussed. Electron microscopy reveals two forms of in-plane defect associated with iodine intercalation, one resulting from faults in realignment of the BiO layers from an a/2 staggered sequence to a registered sequence, and the other related to the packing of If chains in the lattice.