The present invention relates to magnetocaloric materials comprising manganese, iron, silicon, phosphorus, nitrogen and optionally boron.

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 1 and a shortest axis having a length s, wherein 1≥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.

Provided is a magnetic calorific composite material including a magnetic calorific material and an alloy-coated carbon material including an alloy coat having a melting point of 150° C. or lower, in which a content of the alloy-coated carbon material is 7.5 wt % to 22.5 wt %.

The present disclosure concerns materials and compositions for application to an inductive heating or cooling and/or magnetocaloric and/or thermoelectric heating or cooling apparatus. The present disclosure provides, in part, materials and compositions for application in a thermoelectric cell or Peltier cell. The present disclosure further provides, in part, paramagnetic materials and compositions are optimized for use in inductive heating or magnetocaloric or thermoelectric cooling and/or heating devices in order to provide consistent magnetic susceptibility and high thermal conductivity properties.

Provided is a magnetic calorific composite material containing a magnetic calorific material and an alloy binder having a melting point in a range of 100° C. to 150° C., in which a content of the alloy binder is 7.5 to 22.5 wt %.

In one embodiment, a permanent magnet includes a composition expressed by R.sub.pFe.sub.qM.sub.rCu.sub.sCo.sub.100-p-q-r-s (R is a rare-earth element, M is at least one element selected from Zr, Ti, and Hf, 10≤p≤13.5 at %, 28≤q≤40 at %, 0.88≤r≤7.2 at %, and 3.5≤s≤13.5 at %), and a metallic structure including a cell phase having a Th.sub.2Zn.sub.17 crystal phase, and a cell wall phase. A Fe concentration (C1) in the cell phase is in a range from 28 at % to 45 at %, and a difference (C1−C2) between the Fe concentration (C1) in the cell phase and a Fe concentration (C2) in the cell wall phase is larger than 10 at %.

This invention provides a regenerator material having a high specific heat, particularly in the temperature range of 10 to 25K, and a regenerator and a refrigerator comprising the regenerator material. The present invention specifically provides an HoCu-based regenerator material represented by general formula (1): HoCu.sub.2-xM.sub.x (1), wherein x is 0<x≤1, and M is at least one member selected from the group consisting of Al and transition metal elements (excluding Cu), as well as a regenerator and a refrigerator comprising the regenerator material.

Embodiments of the present disclosure provide a flexible base material, a preparation method of the flexible base material, a flexible substrate and a preparation method of the flexible substrate. The flexible base material includes: a host flexible material; and carriers dispersed in the host flexible material and having magnetic particles adsorbed thereon, and the carriers have organophilic functional groups on their surface.

A fluid transport system that includes a magnetic shape memory pipe having an input end opposite an output end and an outer surface opposite an inner surface. The inner surface defines an inner diameter of the magnetic shape memory pipe and the magnetic shape memory pipe includes a magnetic shape memory alloy. The fluid transport system further includes one or more magnetic field generating devices surrounding the outer surface of the magnetic shape memory pipe and configured to generate a control magnetic field that, when applied to a region of the magnetic shape memory pipe, alters the inner diameter of the region of the magnetic shape memory pipe.

Provided is a magnetic refrigeration material whose magnetic transition temperature has been adjusted with high accuracy and which includes at least a first predetermined magnetic refrigeration material and a second predetermined magnetic refrigeration material which differs from the first magnetic refrigeration material. The absolute value of the difference between the magnetic transition temperature of the present magnetic refrigeration material and a target magnetic transition temperature is 0.7 K or less. The content of the first magnetic refrigeration material and the content of the second magnetic refrigeration material are determined by the magnetic transition temperatures of the first magnetic refrigeration material and the second magnetic refrigeration material and by a target magnetic transition temperature of the magnetic refrigeration material.