In La-Cr-As system, the first ternary compound La₃CrAs₅ has been successfully synthesized under high-pressure and high-temperature conditions. La₃CrAs₅ crystallizes into a hexagonal Hf₅Sn₃Cu-anti type structure with a space group of P6₃/mcm (No. 193) and lattice parameters of a=b=8.9845 Å and c=5.8897 Å. The structure contains face-sharing octahedral CrAs₆ chains along the c-axis, which are arranged triangularly in the ab-plane and separated by a significantly large distance of 8.9845 Å. The magnetic properties, resistivity and specific heat measurements were performed. La₃CrAs₅ exhibits a metallic state with Fermi liquid behavior at low temperatures and undergoes a ferromagnetic transition at Curie temperature T_C ∼50 K. First-principles theoretical studies were conducted to calculate its band structure and density of states (DOS), which indicated that the non-negligible contribution of La to the DOS near the Fermi level caused La₃CrAs₅ to be a three-dimensional (3D) metal. The crystal orbital Hamilton population (−COHP) was also calculated to explain the global stability and bonding characteristics in the structure of La₃CrAs₅.

在La-Cr-As体系中，已经成功在高压和高温条件下合成了第一三元化合物La ₃ CrAs ₅。La ₃ CrAs ₅结晶为六边形Hf ₅ Sn ₃ Cu-anti型结构，其空间群为P 6 ₃ / mcm（No。193 ），晶格参数为a = b = 8.9845Å和c = 5.8897Å。该结构沿c轴包含面共享八面体CrAs ₆链，这些链在ab中呈三角形排列平面，并以8.9845Å的较大距离隔开。进行磁性能，电阻率和比热测量。的La _3个CRAS _5只显示出在低温下和在经受居里温度的铁磁过渡费米液体行为的金属状态Ť _Ç〜50 K.第一原理的理论研究，以计算状态的其带结构和密度（DOS），其表明La对费米能级附近DOS的不可忽略的贡献导致La ₃ CrAs ₅成为三维（3D）金属。还计算了晶体轨道的汉密尔顿人口（-COHP）来解释La ₃ CrAs ₅结构的整体稳定性和键合特性。