公开(公告)号：US20170169946A1

公开(公告)日：2017-06-15

申请号：US15378998

申请日：2016-12-14

Applicant: Northeastern University

Inventor： Carmine VITTORIA

IPC: H01F41/18 ,  H01F41/22 ,  C23C14/28 ,  H01F10/08

CPC classification number: C23C14/28 ,  C23C14/08 ,  H01F10/20 ,  H01F41/205

Abstract: A method of making a ferrite thin film is provided in which a portion of the iron ions in the ferrite are substituted by ions of at least one other metal. The substituting ions occupy both tetrahedral and octahedral sites in the unit cell of the ferrite crystal. The method includes placing each of a plurality of targets, one at a time, in close proximity to a substrate in a defined sequence; ablating the target thus placed using laser pulses, thereby causing ions from the target to deposit on the substrate; repeating these steps, thereby generating a film; and annealing the film in the presence of oxygen. The plurality of targets, the sequence of their ablation, and the number of laser pulses that each target is subjected to, are selected so as to allow the substituting ions to occupy both tetrahedral and octahedral sites in the unit cell.

公开(公告)号：US20150380790A1

公开(公告)日：2015-12-31

申请号：US14846309

申请日：2015-09-04

Applicant: Northeastern University

Inventor： Vincent HARRIS ,  Anton GEILER ,  Carmine VITTORIA

IPC: H01P1/18 ,  H01P1/19

CPC classification number: H01P1/184 ,  H01L41/12 ,  H01P1/19

Abstract: Tunable microwave magnetic devices that provide increased performance with reduced size, weight, and cost. The disclosed microwave magnetic devices are voltage-tunable devices that include ferrite substrates. To tune the devices, the magnetic permeability of the respective ferrite substrates is varied by external, voltage-tuned, magnetic fringe fields created by one or more magnetoelectric (ME) transducers.

Abstract translation: 可调谐的微波磁性器件，提供更大的性能，减小尺寸，重量和成本。 所公开的微波磁性器件是包括铁氧体衬底的电压可调谐器件。 为了调谐装置，通过由一个或多个电磁（ME）换能器产生的外部，电压调谐的磁条纹场来改变各铁氧体衬底的磁导率。