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Anomalous magnetization peak effect in spiral-grown crystals

Journal Article


Abstract


  • Magnetic hysteresis loops were measured on spiral-grown (Formula presented)(Formula presented)(Formula presented)(Formula presented) (Bi-2212) crystals. An anomalous peak effect at a magnetic field of 1000-2000 Oe was observed both in high-(Formula presented) (86 K) and oxygen underdoped ((Formula presented)=76 K) spiral-grown crystals between 20 and 40 K. The peak effect was observed to be stronger than that induced by oxygen vacancies, defect dislocation networks reported in Bi-2212 crystals. Further, the anomalous peak almost completely disappeared after removing growth spiral patterns from the crystal surface. Edge barriers associated with the growth spirals are suggested to be responsible for the strong peak effect for the spiral-grown Bi-2212 crystals and not oxygen vacancies or screw dislocations. © 1997 The American Physical Society.

Publication Date


  • 1997

Citation


  • Wang, X., Horvat, J., Liu, H., Li, J., & Dou, S. (1997). Anomalous magnetization peak effect in spiral-grown crystals. Physical Review B - Condensed Matter and Materials Physics, 55(6), R3402-R3405. doi:10.1103/PhysRevB.55.R3402

Scopus Eid


  • 2-s2.0-0012235014

Start Page


  • R3402

End Page


  • R3405

Volume


  • 55

Issue


  • 6

Abstract


  • Magnetic hysteresis loops were measured on spiral-grown (Formula presented)(Formula presented)(Formula presented)(Formula presented) (Bi-2212) crystals. An anomalous peak effect at a magnetic field of 1000-2000 Oe was observed both in high-(Formula presented) (86 K) and oxygen underdoped ((Formula presented)=76 K) spiral-grown crystals between 20 and 40 K. The peak effect was observed to be stronger than that induced by oxygen vacancies, defect dislocation networks reported in Bi-2212 crystals. Further, the anomalous peak almost completely disappeared after removing growth spiral patterns from the crystal surface. Edge barriers associated with the growth spirals are suggested to be responsible for the strong peak effect for the spiral-grown Bi-2212 crystals and not oxygen vacancies or screw dislocations. © 1997 The American Physical Society.

Publication Date


  • 1997

Citation


  • Wang, X., Horvat, J., Liu, H., Li, J., & Dou, S. (1997). Anomalous magnetization peak effect in spiral-grown crystals. Physical Review B - Condensed Matter and Materials Physics, 55(6), R3402-R3405. doi:10.1103/PhysRevB.55.R3402

Scopus Eid


  • 2-s2.0-0012235014

Start Page


  • R3402

End Page


  • R3405

Volume


  • 55

Issue


  • 6