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Head Mount For Ferrite Elements Disclosure Number: IPCOM000055162D
Original Publication Date: 1980-Jun-01
Included in the Prior Art Database: 2005-Feb-13

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Mcmurtry, DH [+details]


In order to compensate for the thermal expansion of the different layers of a head at the reference plane, a Ni-Zn block is used. In the figure, the thermal expansion difference of the ferrite write module W, the ferrite read module R, the ferrite closures C and a copper housing is compensated by a single Ni-Zn block placed at one end. The in-plane thermal expansion of the elements is identical for the copper and the layers of ferrite and Ni-Zn. This is accomplished by selecting the correct length of Ni-Zn block to compensate for the lengths and thermal expansion coefficients of the other components. The elements are placed within a housing which can be made of copper and held in place by screws which hold the different elements against the reference plane.