Investigation of magnetic properties and electronic structure of layered-structure borides Al T 2 B 2 ( T =Fe, Mn, Cr) and AlFe 2–x Mn x B 2

Developing magnetofunctionality: Coupled structural and magnetic phase transition in AlFe2B2

“…The room temperature zero-field heat capacity of AlFe 2 B 2 was determined as 110 J/mole K [8]. Building on the results of Tan 1.0) indicates that substitution of Mn for Fe in the AlFe 2 B 2 lattice increases the unit cell volume but suppresses the ferromagnetism [13].…”

“…There are a M A N U S C R I P T A C C E P T E D ACCEPTED MANUSCRIPT 4 number of active magnetocaloric refrigeration and thermal energy harvesting device designs in existence today that are anticipated to provide highly efficient energy transformations, provided that appropriate magnetofunctional working materials may be developed [5]. This materials challenge has proven to be formidable; in addition to difficulties with materials fabrication, mechanical integrity and corrosion issues during cycling, many magnetothermal materials under consideration today contain rare, toxic or strategically-limited elements: these materials include Gd, Gd 5 (GeSi) 4 , FeRh, MnAs, FeMnAsP and (La((FeCo)Si(H)) 13 [4]- [7]. Against this backdrop the recent report of a room-temperature magnetocaloric effect in the ferromagnetic compound AlFe 2 B 2 is of interest [8].…”

A Delicate Balance between Antiferromagnetism and Ferromagnetism: Theoretical and Experimental Studies of A2MRu5B2 (A=Zr, Hf; M=Fe, Mn) Metal Borides

“…[18] Te tragonal Ti 3 Co 5 B 2 (space group P4/mbm,n o. [17][18][19][20][21][22][23][24][25][26][27][28][29][30][31] The crystal structure of the ternary variants is formed by face-connected trigonal, tetragonal, andp entagonal prisms of T/T'-atoms (electron-rich transition metals such as Co, Rh, Ir,R u). [17][18][19][20][21][22][23][24][25][26][27][28][29][30][31] The crystal structure of the ternary variants is formed by face-connected trigonal, tetragonal, andp entagonal prisms of T/T'-atoms (electron-rich transition metals such as Co, Rh, Ir,R u).…”

Mössbauer study of the magnetocaloric compound AlFe2 B 2

“…In the aluminium layer the atoms occupy the 2a-position and in the (Fe 2 B 2 )-slabs iron and boron occupy the 4j and 4i positions, respectively. In previous studies, magnetic measurements and Mössbauer spectroscopy have shown that AlFe 2 B 2 is a ferromagnetic material with reported values of T c varying between 282-320 K and saturation magnetic moments ranging between 0.95 and 1.25 µ B /Fe-atom [8][9][10]. The magnetic entropy change has been reported to -4.1 and -7.7 J/K kg at an applied magnetic field of 1600 and 4000 kA/m, respectively [9].…”