US 12,034,424 B2
Method for the reconfiguration of a vortex density in a rare earth manganate, a non-volatile impedance switch and use thereof
Heidemarie Schmidt, Dresden (DE); Nan Du, Jena (DE); Agnieszka Bogusz, Dresden (DE); Stephan Krüger, Dresden (DE); and Ilona Skorupa, Dresden (DE)
Assigned to HELMHOLTZ-ZENTRUM DRESDEN—ROSSENDORF E.V., Dresden (DE)
Appl. No. 17/058,363
Filed by HELMHOLTZ-ZENTRUM DRESDEN—ROSSENDORF E.V., Dresden (DE)
PCT Filed May 7, 2019, PCT No. PCT/EP2019/061717
§ 371(c)(1), (2) Date Nov. 24, 2020,
PCT Pub. No. WO2019/223999, PCT Pub. Date Nov. 28, 2019.
Claims priority of application No. 10 2018 112 605.0 (DE), filed on May 25, 2018.
Prior Publication US 2021/0305961 A1, Sep. 30, 2021
Int. Cl. H01F 1/03 (2006.01); H01H 36/00 (2006.01); H03H 7/01 (2006.01)
CPC H03H 7/01 (2013.01) [H01H 36/00 (2013.01); H01F 1/0317 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method for reconfiguring a vortex density in a rare earth manganate comprising:
applying a one-off voltage-time profile between a first and a second electrically conductive contact of the rare earth manganate attached to the rare earth manganate;
allowing a cooling process so that the rare earth manganate goes through an ordering temperature in a region of an electric field established between the two electrically conductive contacts during and after application of the one-off voltage-time profile; and
wherein the vortex density is thus influenced and set locally in the region of the electric field established between the two electrically conductive contacts, and a temperature gradient of either: (i) greater than 1 K/min, preferably greater than 10 K/min, more preferably greater than 100 K/min, is generated for reconfiguring the vortex density with a resulting impedance having a dominant inductive reactance, or (ii) less than 100 K/min, preferably less than 10 K/min, more preferably less than 1 K/min, is generated for reconfiguring the vortex density with a resulting impedance having a dominant capacitive reactance.