In {HEAD ~ the preferred embodiment} of {TAIL ~ the invention}, the thickness of at least one interlayer is in the range of about 1 μm to 20 μm and the total thickness for each of the other interlayers is at least 10 Å 
of
In { HEAD ~ the preferred embodiment } of { TAIL ~ the invention } , the thickness of at least one interlayer is in the range of about 1 μm to 20 μm and the total thickness for each of the other interlayers is at least 10 Å
OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH