Robert Boschgmbh

Andreas Hartlieb

Jochen C Beintner

Heiko Stahl

Juergen Butz

A polycrystalline material having low mechanical strain is provided. The polycrystalline material includes one or multiple layers of a first type and one or multiple layers of a second type. The layers of the first type and the layers of the second type each include at least one polycrystalline material component. The layers of the first type have a smaller average crystal grain size than the layers of the second type, a layer of the first type and a layer of the second type being situated, at least in part, one above the other in an alternating sequence, and it being the case for the transition between the layers of the first type and the layers of the second type to be abrupt or continuous.

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Stuttgart, Germany

Andreas Hartlieb