Giant magnetocaloric effect in a rare-earth-free layered coordination polymer at liquid hydrogen temperatures.

ABSTRACT: Magnetic refrigeration, which utilizes the magnetocaloric effect, can provide a viable alternative to the ubiquitous vapor compression or Joule-Thompson expansion methods of refrigeration. For applications such as hydrogen gas liquefaction, the development of magnetocaloric materials that perform well in moderate magnetic fields without using rare-earth elements is highly desirable. Here we present a thorough investigation of the structural and magnetocaloric properties of a novel layered organic-inorganic hybrid coordination polymer Co₄(OH)₆(SO₄)₂[enH₂] (enH₂ = ethylenediammonium). Heat capacity, magnetometry and direct adiabatic temperature change measurements using pulsed magnetic fields reveal a field-dependent ferromagn

SUBMITTER: Levinsky JJB 

PROVIDER: S-EPMC11450188 | biostudies-literature | 2024 Oct

REPOSITORIES: biostudies-literature