Lots of excellent research has been done that demonstrates the cogency of mnemonics for learning vocabulary. I highly suggest you check out this paper: https://www.researchgate.net/publication/369515677_Mnemonics_and_Their_Effect_on_Students'_Vocabulary_Memorization_and_Recall_A_Quantitative_Study#:~:text=This%20research%20also%20revealed%20the,enthusiastic%20in%20memorizing%20English%20vocabulary.