| 释义 |
ferroelectric, a. and n.|ˌfɛrəʊɪˈlɛktrɪk|
[f. electric a. and n., after ferromagnetic.]
A. adj.
a. Of a body or substance: having the property that a permanent electric polarization can be induced or reversed by the application of an electric field; exhibiting hysteresis between displacement and an applied electric field.
b. Of or pertaining to ferroelectricity.
1935H. Mueller in Physical Rev. 2nd Ser. XLVII. 180 The dielectric properties of Rochelle salt..are analogous to the ferromagnetic properties near the Curie point. This fact justifies the use of Eq. (7) for the ‘ferro-electric’ temperature range. 1940Ibid. LVII. 829/2 It neglects the large piezoelectric effects which occur in all ferroelectric crystals. 1955Sci. Amer. June 96/2 The material used in the experimental ferroelectric memory systems is barium titanate.
B. n. A ferroelectric body or substance.
1946Nature 15 June 808/1 As distinct from other known ferro-electrics, barium titanate does not contain hydrogen. 1958Electronic Engin. XXX. 678 The application of a polarizing field will switch the ferro⁓electric to one or other of its stable states. 1970J. Grindlay Introd. Phenomenol. Theory Ferroelectr. i. 1 Many ferroelectrics possess a spontaneous dipole moment only in certain temperature ranges. |