Bulk YBa2Cu3O7 samples were prepared by PMP method. Through adjusting ingredients and preparation procedures, a pellet with 3. 5 cm in diameter and 0. 9 cm in thickness was synthesized. A mass of 1. 3 kg on a magnet c...Bulk YBa2Cu3O7 samples were prepared by PMP method. Through adjusting ingredients and preparation procedures, a pellet with 3. 5 cm in diameter and 0. 9 cm in thickness was synthesized. A mass of 1. 3 kg on a magnet can be levitated at about 1 mm height at 77 K. The XRD and SEM indicated that magnetic lifting property can be enhanced by addition of Ag2O and Y2BaCuO5.展开更多
Let s ∈R,0〈β≤∞, 0〈 q, p〈 ∞ and-n/q〈α. In this paper the authors introduce the Herz-type Triebel-Lizorkin spaces,Kq^α,pFβ^s（R^n）andKq^α,pFβ^s（R^n）which are the generalizations of the well-known Herz-...Let s ∈R,0〈β≤∞, 0〈 q, p〈 ∞ and-n/q〈α. In this paper the authors introduce the Herz-type Triebel-Lizorkin spaces,Kq^α,pFβ^s（R^n）andKq^α,pFβ^s（R^n）which are the generalizations of the well-known Herz-type spaces and the inhomogeneous Triebel-Lizorkin spaces, Some properties on these Herz-type Triebel Lizorkin spaces are also given.展开更多
文摘Bulk YBa2Cu3O7 samples were prepared by PMP method. Through adjusting ingredients and preparation procedures, a pellet with 3. 5 cm in diameter and 0. 9 cm in thickness was synthesized. A mass of 1. 3 kg on a magnet can be levitated at about 1 mm height at 77 K. The XRD and SEM indicated that magnetic lifting property can be enhanced by addition of Ag2O and Y2BaCuO5.
基金The first author is partially supported by NNSF (No. 60474070) NSF of Hunan, China (01JJY3003)the second (corresponding) author is partially supported by RFDP (No. 20020027004) and NNSF (No. 10271015)of China
文摘Let s ∈R,0〈β≤∞, 0〈 q, p〈 ∞ and-n/q〈α. In this paper the authors introduce the Herz-type Triebel-Lizorkin spaces,Kq^α,pFβ^s（R^n）andKq^α,pFβ^s（R^n）which are the generalizations of the well-known Herz-type spaces and the inhomogeneous Triebel-Lizorkin spaces, Some properties on these Herz-type Triebel Lizorkin spaces are also given.
