Abstract: A wearable fitness/exercise/assistance apparatus using at least an elastic cable. The wearable apparatus may include a base plate to be worn on the back of a user, a wearing band connected to the base plate, a driving module including a module case provided to the base plate to be detachable, a motor disposed inside the module case, an inelastic cable connected to the motor, and an elastic cable connected to the inelastic cable, and a wearing part to be worn on the body of the user and connected to the elastic cable, wherein the elastic cable may have a length that changes when the inelastic cable is moved by the motor. In addition, various embodiments are possible.

Abstract: The present invention concerns at least an antiferromagnetic layer, which is in direct contact with a ferromagnetic layer for inducing an exchange bias in the ferromagnetic layer. Thus, the ferromagnetic layer is pinned by the antiferromagnetic layer, also referred to as the pinning layer. The antiferromagnetic or pinning layer comprises a compound from the group of orthoferrites, which show a variety of advantages. For example, these antiferromagnets can have a Néel temperature TN ranging from at least 623 K to 740 K depending on the compounds, and they can display a weak ferromagnetic moment. Therefore, a magnetic device comprising the mentioned structure can be used properly in an environment of a high operating temperature. The compound can be described by the formula RFe1−xTMxO3with R a rare earth element or Yttrium, and TM a transition metal which can be one element of the groups IB to VIII.