@article{oai:muroran-it.repo.nii.ac.jp:00006359,
 author = {Nagata,  Shoichi and 永田, 正一 and YAMAGISHI, Takumi and AWAKA, Kenji and 阿波加,  淳司 and AWAKA, Junji and Ebisu, Shuji and 戎, 修二 and CHIKAZAWA,  Susumu and 近澤, 進},
 issue = {1},
 journal = {Journal of physics and chemistry of solids},
 month = {Jan},
 note = {application/pdf, Vanadium garnets NaPb2Co2V3O12 and NaPb2Ni2V3O12 have been successfully synthesized. The X-ray diffraction experiments indicate that these compounds have the garnet structure of cubic symmetry of space group Ia3?d(Oh10) with the lattice constant of 12.742 Å (NaPb2Co2V3O12) and 12.666 Å (NaPb2Ni2V3O12), respectively. The magnetic susceptibility of NaPb2Ni2V3O12 shows the Curie Weiss paramagnetic behavior between 4.2 and 350 K. The effective magnetic moment μeff of NaPb2Ni2V3O12 is 3.14 μB due to Ni2+ ion at A-site and the Weiss constant is -3.67 K (antiferromagnetic sign). For NaPb2Co2V3O12, the simple Curie Weiss law cannot be applicable. The ground state is the spin doublet E2(t26e) and the first excited state is spin quartet T4(t25e), according to Tanabe-Sugano energy diagram on the basis of octahedral crystalline symmetry. This excited spin quartet state just a bit higher than ground state influences strongly the complex temperature dependence of magnetic susceptibility for NaPb2Co2V3O12.},
 pages = {177--183},
 title = {Magnetic susceptibility of vanadium garnets NaPb2Co2V3O12 and NaPb2Ni2V3O12},
 volume = {66},
 year = {2005},
 yomi = {ナガタ, ショウイチ and アワカ, ジュンジ and エビス, シュウジ and チカザワ, ススム}
}