A frustrated magnetic material and a method of making the same
By preparing cubic Pb2MnMoO6 materials and synthesizing them using a high-temperature and high-pressure method, the problem of low frustration coefficient of A2BB'O6 type B-site ordered double perovskite materials was solved, realizing a research platform for the preparation of highly frustrated materials and novel physical phenomena.
CN117550644BActive Publication Date: 2026-05-29INSTITUTE OF PHYSICS CHINESE ACADEMY OF SCIENCES
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- INSTITUTE OF PHYSICS CHINESE ACADEMY OF SCIENCES
- Filing Date
- 2023-11-28
- Publication Date
- 2026-05-29
AI Technical Summary
Technical Problem
The frustration coefficients of existing A2BB'O6 type B-site ordered double perovskite materials are generally low, and they have not been fully studied.
Method used
A cubic Pb₂MnMoO₆ material was prepared by high temperature and high pressure synthesis to ensure a frustration coefficient f>12.5. The characteristic peaks of the X-ray powder diffraction pattern were observed at a specific angle by Cu-Kα ray measurement, and the magnetic susceptibility test showed no long-range magnetic order.
Benefits of technology
The fabrication of strongly frustrated materials has been achieved, and the magnetic materials exhibit no long-range magnetic order at low temperatures, providing an ideal platform for exploring novel quantum effects.
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Figure CN117550644B_ABST
Abstract
The application relates to a frustrated magnetic material, and the molecular formula of the frustrated magnetic material is Pb2MnMoO6. The application belongs to the technical field of condensed matter physics, and solves the problem that the frustration coefficient of a double-perovskite structure frustrated magnetic material in the prior art is generally low. The frustrated magnetic material has a molecular formula of Pb2MnMoO6, belongs to a B-site ordered double-perovskite material, and presents a distorted perovskite crystal structure. Magnetization rate testing shows that long-range magnetic order does not appear until the temperature is reduced to 2K (T N <2K). Through Curie-Weiss fitting of the magnetization rate-temperature curve, the Curie-Weiss temperature obtained is theta cw =-25K, so the frustration coefficient f of the material is greater than 12.5. The above results show that the new B-site ordered double-perovskite material Pb2MnMoO6 prepared under high-temperature and high-pressure extreme conditions is a strong frustrated material.
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