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Title: Tunable polarity of the Casimir force based on saturated ferrites

We study the polarity of the Casimir force between two different parallel slabs separated by vacuum when the saturated ferrite materials under the influence of an external magnetic field are taken into consideration. Between the ordinary dielectric slab and the ferrite slab, repulsive Casimir force may be observed by adjusting the applied magnetic field. For the ferrite material, we consider the frequency dependence of the permeability modified by the external magnetic field to analyze the formation of the repulsive Casimir force. The restoring force, which means the transition of the force polarity from repulsion to attraction with the increasing slab separation, can also be obtained between two different ferrite slabs.
Authors:
 [1] ;  [2] ;  [3]
  1. School of Telecommunication, Hangzhou Dianzi University, Hangzhou 310018 (China)
  2. Department of Physics, Tongji University, Shanghai 200092 (China)
  3. (China)
Publication Date:
OSTI Identifier:
21529076
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review. A; Journal Volume: 83; Journal Issue: 1; Other Information: DOI: 10.1103/PhysRevA.83.012517; (c) 2011 American Institute of Physics
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; 74 ATOMIC AND MOLECULAR PHYSICS; CASIMIR EFFECT; DIELECTRIC MATERIALS; FERRITES; FREQUENCY DEPENDENCE; MAGNETIC FIELDS; PERMEABILITY; SLABS FERRIMAGNETIC MATERIALS; IRON COMPOUNDS; MAGNETIC MATERIALS; MATERIALS; OXYGEN COMPOUNDS; PHYSICAL PROPERTIES; TRANSITION ELEMENT COMPOUNDS