Abstract: In an embodiment, a method of fabricating a working component for magnetic heat exchange comprises arranging at least two articles comprising a magnetocalorically active phase and an elongated form with a long axis having a length l and a shortest axis having a length s, wherein l?1.5 s, such that the shortest axes of the at least two articles are substantially parallel to one another and securing the at least two articles in a position within the working component such that the shortest axes of the at least two articles are substantially parallel to one another within the working component.

Abstract: A method of fabricating an article for magnetic heat exchange, is provided which comprises plastically deforming a composite body comprising a binder having a glass transition temperature TG and a powder comprising a magnetocalorically active phase or elements in amounts suitable to produce a magnetocalorically active phase such that at least one dimension of the composite body' changes in length by at least 10%.

Abstract: A method of fabricating an article for magnetic heat exchange, is provided which comprises plastically deforming a composite body comprising a binder having a glass transition temperature TG and a powder comprising a magnetocalorically active phase or elements in amounts suitable to produce a magnetocalorically active phase such that at least one dimension of the composite body’ changes in length by at least 10%.

Abstract: In an embodiment, a method of fabricating a working component for magnetic heat exchange comprises arranging at least two articles comprising a magnetocalorically active phase and an elongated form with a long axis having a length l and a shortest axis having a length s, wherein l?1.5 s, such that the shortest axes of the at least two articles are substantially parallel to one another and securing the at least two articles in a position within the working component such that the shortest axes of the at least two articles are substantially parallel to one another within the working component.

Abstract: A method of fabricating an article for magnetic heat exchange is provided. The method comprises mixing a binder comprising a poly (alkylene carbonate) and powder comprising a magnetocalorically active phase with a NaZn13-type crystal structure to produce a brown body or powder comprising elements in amounts suitable to produce a magnetocalorically active phase with a NaZn13-type crystal structure, removing the binder from the brown body to produce a green body, and sintering the green body to produce an article for magnetic heat exchange.