Structure, composition and magnetocaloric properties in polycrystalline La A MnO (A = Na, K)

Review of the magnetocaloric effect in manganite materials

“…A number of works reported the MCEs in lanthanum manganites with doping M 1+ ions in the La-site, that is, La 1Àx M x MnO 3 with M ¼ Na, K and Ag [23][24][25][26][27]. Zhong et al [23][24][25] showed that the MCE peak temperature could be tuned in the temperature range of 195-334 K for La 1Àx Na x MnO 3 compounds and in the temperature range of 230-334 K for La 1Àx K x MnO 3 compounds.…”

Magnetocaloric effect above room temperature in the ordered double-perovskite Ba2Fe1+xMo1−xO6

“…Meanwhile, the hole-doped ABO 3 -type perovskite manganites perovskites [27,28] have also been found to generate large magnetic entropy change under a moderate magnetic field. In our recent systematic investigations carried out on magnetocaloric properties of perovskite materials, we have found many significant results [10][11][12][13][14][15][16][17][18][19][20][21][22][23][24][25][26][27][28]. Very recently, the basic research in the electronic and magnetic properties of the perovskite-type compounds of the type ABO 3 has been extended to compounds with ordered double-perovskite structure A 2 B 0 B 00 O 6 , in particular because magnetically ordered Sr 2 FeMoO 6 has shown a low-field colossal magnetoresistance remaining significant up to room temperature [29].…”

Electrical transport and magnetic properties of Nd1−xNaxMnO3 manganites

“…There are few reports on studies of monovalent alkali-metal-doped samples [11][12][13]. In this paper, we present the investigation of the magnetic and electrical transport properties of polycrystalline Nd 1−x Na x MnO 3 (x = 0, 0.1, 0.167, 0.25).…”