“…Furthermore, an NRMA signal has shown very interesting and complex features in high-temperature superconductors where several models have been invoked to discern them. These features include; paramagnetic Meissner effect [24,25], the anomalous absorption which depends on temperature [26] and rf field [27], the anomalous hysteresis [28], magnetic shielding effect [29], surface barrier effect [30], spin glassy effect [31], second and third peaks [32,33], oxygen deficiency [34], among many more. It has been established that an NRMA signal depends strongly on the form of the sample.…”