  Pinning force data, Fp, of a variety of Fe-based high-Tc superconductors
(11-, 111-, 122- and 1111-type) were analyzed by means of a scaling approach
based on own experimental data and an extensive collection of literature data.
The literature data were mostly replotted, but also converted from critical
current measurements together with data for the irreversibility line when
available from the same authors. Using the scaling approaches of Dew-Hughes and
Kramer, we determined the scaling behavior and the best fits to the theory. The
data of most experiments analyzed show a good scaling behavior at high
temperatures when plotting the normalized pinning force Fp/Fp,max versus the
irreversibility field, Hirr. The resulting peak positions, h0, were found at
0.3 for the 11-type materials, at 0.48 for the 111-type materials, between 0.32
and 0.5 for the 1111-type materials and between 0.25 and 0.71 for the 122-type
materials. This high peak position ensures a good performance of the materials
in high applied magnetic fields and is, therefore, a very promising result
concerning the possible applications of the Fe-based high-Tc superconductors.
