Magnetocaloric Effect for La0.54Sr0.27Gd0.19MnO3 Nanoparticles at Room and Cryogenic Temperatures

Cryogenic magnetocaloric effect in the Fe17 molecular nanomagnet

We study the magnetothermal properties of magnetically isotropic high-spin molecular nanomagnets containing 17 Fe ions per molecule linked via oxide and hydroxide ions, packed in a crystallographic cubic symmetry. Low-temperature magnetization and heat capacity experiments reveal that each molecular unit carries a net spin ground state as large as S = 35/2 and a magnetic anisotropy as small as ...

Cryogenic magnetocaloric effect in a ferromagnetic molecular dimer.

Over the last few years, great interest has emerged in the synthesis and magnetothermal studies of polymetallic molecular clusters based on paramagnetic ions, often referred to as molecular nanomagnets, in view of their potential application as lowtemperature magnetic refrigerants.[1,2] What makes them promising is that their cryogenic magnetocaloric effect (MCE) can be considerably larger than...

Refractive Index of ZnSe at Cryogenic Temperatures†

This report describes an extensive data set on the refractive index of ZnSe that provides full high resolution coverage of the CRIRES operating range in both wavelength and temperature. By combining our prototype instrument model of CRIRES with these data our project to provide wavelength calibration for IR Echelle spectrographs (WIRE) has reached an important milestone and is ready to support ...

Calorimetric observation of the melting of free water nanoparticles at cryogenic temperatures.

We present an experimental study of the thermodynamics of free, size-selected water cluster anions consisting of 48 and 118 molecules. The measured caloric curves of the clusters are bulklike at low temperatures but show a well-defined, particle-size specific transition at 93+/-3 K for (H2O)48- and 118+/-3 K for (H2O)118-. At the transition temperature the heat capacity strongly increases, whic...

Abnormal magnetic behaviors and large magnetocaloric effect in MnPS3 nanoparticles