Incremental growth and mineralogy of Pannonian (Late Miocene) sciaenid otoliths – palaeoecological implications.

Ontogenetic age and body dimensions were studied on three extremely well-preserved sciaenid fish otoliths from sublittoral marls of Lake Pannon from Doba, Bakony Mts, Hungary. Macroscopic and microscopic observations offered clear evidence for the preservation of the genuine structural characteristics, for instance the bipartite incremental features. Ontogenetic ages were assigned for the three specimens as 16, 7 and 6 years by counting the annuli of the sagittae. Analytical results prove that the original aragonitic mineralogy has been preserved making them, and probably other Late Miocene teleost fossils, suitable for future microchemical analysis to reconstruct the past physicochemical environment

Preliminary report on the field surveys and excavations in the vicinity of Berettyóújfalu

The staff of the Institute of Archaeological Sciences at the Eötvös Loránd University carried out rescue excavationsprior to the construction of the M4 motorway in Hajdú-Bihar County in 2015. Within the frames of this project theopportunity was given to unearth approximately 5 hectares of a multi-period site east of the city of Berettyóújfalu.Before this excavation systematic field surveys had been carried out on the same site in a 24 hectares large area inthe frames of an OTKA (Hungarian Scientific Researh Fund) project in 2013. Thus there is a possibility to compare thedata of the fieldwalking with the results of the excavation

Laser irradiation effects in FeRh thin film

The effect of laser irradiation in the energy range from 20 mW to 200 mW was investigated in 109 nm thick Fe 51 Rh 49 film deposited on an MgO (100) substrate. The initial, A1 structure with fully paramagnetic magnetic ordering was achieved after irradiating the samples with 120 keV Ne + ions with a fluence of 1 × 10 16 ion cm −2 , as it was confirmed by conversion-electron Mössbauer spectroscopy. At higher powers physical damage of the layer was observed, while in the lowest power case, magnetic force microscopy revealed a well-defined magnetic structure reflecting the laser irradiation pattern. The presented results have the potential to be employed for laser ablation or allows the fabrication of arbitrary ferromagnetic pattern within a homogeneous paramagnetic FeRh thin films