Magnetic properties and domain-wall motion in single-crys

X. Zhang, J. Hernàndez, J. Tejada, R. Solé, X. Ruiz

Research output: Contribution to journalArticlepeer-review

48 Scopus citations


The magnetic properties of (Formula presented)(Formula presented) and (Formula presented)(Formula presented)(Formula presented)(Formula presented) single crystals have been investigated in the temperature range (1.8 to 320 K) with a varying field from -5 to +5 T applied parallel and perpendicular to the c axis. Low-temperature magnetic relaxation, which is ascribed to the domain-wall motion, was performed between 1.8 and 15 K. The relaxation of magnetization exhibits a linear dependence on logarithmic time. The magnetic viscosity extracted from the relaxation data, decreases linearly as temperature goes down, which may correspond to the thermal depinning of domain walls. Below 2.5 K, the viscosity begins to deviate from the linear dependence on temperature, tending to be temperature independent. The near temperature independence of viscosity suggests the existence of quantum tunneling of antiferromagnetic domain wall in this temperature range.

Original languageEnglish (US)
Pages (from-to)3336-3340
Number of pages5
JournalPhysical Review B - Condensed Matter and Materials Physics
Issue number6
StatePublished - 1996
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics


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