Half-ellipsoidal domain

The expression for the domain wall energy and depolarization field energy of the elongated half-ellipsoidal domain has been obtained by Landauer [63] ... 

The integral is calculated over the volume of the half-ellipsoidal domain, and using Equation (10.20) for the normal component of the field intensity we obtain ... 

The domain energy W consists of the depolarization field energy W,i, the energy of the domain walls Ws, and the energy, Wt, of the interaction between the electric field of the tip and the spontaneous polarization of the domain. Following Landauer [63] hereafter we assume that the domain has a shape of an elongated half-ellipsoid in the polar direction. 

MPO is a covalently linked dimer which is ellipsoidal in shape with overall dimensions of 110 x 60 x 50 A. The dimer can be cleaved by reduction of a disulfide bond into two identical halves. Each half of the dimer termed hemi-MPO has the same optical and catalytic properties of the dimer. Hemi-MPO consists of two polypeptides of466 and 108 amino acid residues, and a heme prosthetic group covalently bound to the large polypeptide. Like CcP and LIP, MPO is largely a helical bundle protein with very little -sheet stmcture. The bulk of the large polypeptide folds into five separate domains and one... 

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