Crystal structure and magnetism of Gd5−xEuxGe4

Experimental and Theoretical Study on the Nonmagnetic Li/Mg Cosubstitution in the Gd5–x(Li/Mg)xGe4 (x = 1.04, 1.17, 1.53) System

“…Interestingly, there exist some examples in the overall RE 5 Ge 4 system containing such a phase width due to cation mixing. Some of these phases include the RE 5– x Mg x Ge 4 (RE = Gd–Tm, Lu, Y, Yb; 1.0 ≤ x ≤ 2.3) system, , the Gd 5– x Eu x Ge 4 (0 ≤ x ≤ 2) system, , and the RE 5– x Li x Ge 4 (RE = La, Ce, Pr, Nd, Sm, Gd; 1.00 ≤ x ≤ 1.03) system. , It is noteworthy that the VEC values for these compounds are mostly between 28.7 and 30.0 and those of the title compounds of this work are certainly within this range of VEC values.…”

Influence of p‐Type Double‐Doping on the Crystals and Electronic Structures of Two Polar Intermetallics: La4.57(1)Li0.43Ge3.80(3)In0.20 and Nd4.32(1)Li0.68Ge3.87(3)In0.13

“…These experimental and theoretical investigations not only enhanced the giant MCE properties, but eventually help to understand the correlation among structure‐composition‐physical properties . In particular, various cationic and anionic elemental substitution have been attempted, and some of the results of those trials include the Gd 5‐ x Y x Tt 4 (Tt = Si, Ge; 0 ≤ x ≤ 4), Gd 5‐ x RE x Ge 4 (RE = La, Lu; 0.05 ≤ x ≤ 0.4 for La, x = 0.125, 0.25 for Lu), Gd 5‐ x Eu x Ge 4 (0 ≤ x ≤ 2), Gd 5‐ x M x Tt 4 ( M = Zr, Hf; Tt = Si, Ge; 0.5 ≤ x ≤ 5), La 5‐ x Y x Si 4 (0 ≤ x ≤ 5), and RE 5‐ x Mg x Ge 4 (RE = Gd‐Tm, Lu, Y; 1.0 ≤ x ≤ 2.3) systems for cation substitution, and Gd 5 Si 1.5 Ge 2.5 , the Gd 5 Ge 4‐ x Si x (0 ≤ x ≤ 3), Gd 5 Ge 4‐ x Ga x (0 ≤ x ≤ 2.2), and Gd 5 Si 4‐ x Sn x (0 ≤ x ≤ 3) systems for anion substitutions. Our research group also recently reported results of our systematic investigations for the p ‐type Li substituted RE 4 LiGe 4 (RE = La, Ce, Pr, Sm) system .…”

Crystal Structure, 7Li NMR, and Structural Relationship of Two Rare‐Earth Metal Richer Polar Intermetallics: La15Ge9Li1.50(16) and La7Ge3

“…[15][16][17][18] Moreover, the magnetic properties of the series have successfully been improved by various cation or anion doping using either electron richer or poorer elements. [19][20][21][22][23][24][25][26][27][28] Another example of the RE 5 Ge 3 series has also been thoroughly studied due to its interesting magnetic features generated by the rare-earth metal richer composition and its versatility for the interstitial chemistry. 29 To date, more than 20 different interstitial elements have been favorably intercalated into the octahedral sites inside the crystal structure of the RE 5 Ge 3 series resulting in a stuffed version of the same structure type, the RE 5 Ge 3 Z (Z = interstitial elements) series.…”

“…In particular, the RE 5 Tt 4 series have been extensively studied by researchers worldwide due to its giant magnetocaloric effect, magnetoresistance, and magnetostriction applications . Moreover, the magnetic properties of the series have successfully been improved by various cation or anion doping using either electron richer or poorer elements . Another example of the RE 5 Ge 3 series has also been thoroughly studied due to its interesting magnetic features generated by the rare‐earth metal richer composition and its versatility for the interstitial chemistry .…”