Evidence for electromagnetic granularity in the polycrystalline iron-based superconductor LaO0.89F0.11FeAs

Details Evidence for electromagnetic granularity in the polycrystalline iron-based superconductor LaO0.89F0.11FeAs Evidence for electromagnetic granularity in the polycrystalline iron-based superconductor LaO0.89F0.11FeAs

2008-05-09

arxiv.org/abs/0805.1282v1

Appl. Phys. Lett. vol. 92, no. 252501 (2008)

Physics

Condensed Matter

Superconductivity

3 pages, 6 figures

Scientific paper

10.1063/1.2952195

The new rare-earth arsenate superconductors are layered, low carrier density compounds with many similarities to the high-Tc cuprates. An important question is whether they also exhibit weak-coupling across randomly oriented grain-boundaries. In this work we show considerable evidence for such weak-coupling by study of the dependence of magnetization in bulk and powdered samples. Bulk sample magnetization curves show very little hysteresis while remanent magnetization shows almost no sample size dependence, even after powdering. We conclude that these samples exhibit substantial electromagnetic granularity on a scale approximating the grain size, though we cannot yet determine whether this is intrinsic or extrinsic.

Affiliated with

Also associated with

No associations

Rating

Evidence for electromagnetic granularity in the polycrystalline iron-based superconductor LaO0.89F0.11FeAs does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Evidence for electromagnetic granularity in the polycrystalline iron-based superconductor LaO0.89F0.11FeAs, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Evidence for electromagnetic granularity in the polycrystalline iron-based superconductor LaO0.89F0.11FeAs will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-332114