The invention relates to thermoplastic mixtures or to films produced therefrom, containing at least one polyvinyl acetal and at least one plasticiser, characterised by the addition of 0. Unlike DAG-based systems where time is another variable, time is external to the evaluation engine so that it can easily evaluate alternate times and even entire simulations. The spots appearing on the feature in the 3D location are connected in order to find depth coordinates of the points on the feature with a resolution finer than a depth increment corresponding to a transverse shift equal to the average distance between the spots in the image. The heat flow transferred from the hot gas to the flow medium is ascertained for this purpose allowing for a specific temperature value characteristic of the current temperature of the hot gas at the evaporator inlet and a specific mass flow value characteristic for the current mass flow of the hot gas. Thereby, it is possible to provide a thin film magnetic memory device realizing miniaturization of the memory cell and, also, having a high reliability, and a manufacturing method therefor.