True Nanoferroics with the Properties Absent in Corresponding Bulk Samples

True Nanoferroics with the Properties Absent in Corresponding Bulk Samples 

In the previous Chaps. 2 and 3, the main attention has been paid to the nanomaterials with essential size effect of their average properties. With the increase of a sample size, the latter properties vary from those primarily defined by a surface to those in a bulk sample. In this case, the former properties differ essentially from latter ones. The validity of latter statement follows from measurements of the spatial profiles of above physical properties. The results show clearly that local properties of nanoparticles (films) with not very small sizes (thickness) contain both surface and bulk contributions, see Fig. 2.18 for instance. Since majority of experimentally measured physical properties are indeed a mixture of bulk and surface ones, the bulk and surface contributions depend on sample geometry and surface S to volume V ratio. As a result the peculiarities of nanomaterials physical properties could be veiled by the bulk influence. The opposite example follows from Fig. 2.18, 

Glinchuk et si., Nanoferroics, Springer Series in Materials Science 177, DOI 10.1007/978-94-007-5992-3 4, 

In this Chapter, contrary to Chaps. 2 and 3, where primary ferroics were considered, we are going to pay more attention to multiferroics with coexistence of ferroelectric and magnetic order. We will consider these multiferroics in the form of thin films on subsfrate [9, 10] or nanowires [11] on the example of quantum paraelectric EuTiOs. The necessity of detailed consideration of magnetoelectric effects in such systems is pretty obvious also. 

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