CN101423974B - Evaluation device for the synthesis and evaluation of complex small crystals under magnetic field conditions - Google Patents

Abstract

The invention relates to a compound small crystal synthesis evaluation device under the condition of a magnetic field, which belongs to the field of single crystal growth. Introducing the magnetic field intervention mechanism in the synthesis experiment of small crystals of complexes, and timely evaluating and mastering the law of its influence, has certain scientific significance for exploring potential valuable seedlings of crystal materials. This case provides an experimental setup suitable for this purpose. The device in this case includes two flat boxes stacked together, and many cups, the wall of the cup is a hollow wall, and the outer surface of the cup is equipped with a water inlet and a water outlet. A water inlet port and a water outlet port of a cup are communicated with two flat box-shaped objects respectively, and a permanent magnet is installed at the bottom of the cup-shaped object. The device in this case is applied to the observation and evaluation of related reactions and effects in the preparation process of complex small crystals under the intervention of magnetic field. The device guides and strengthens the reaction tendency and crystallographic orientation in line with the goals sought by the corresponding synthetic experiments.

Description

Evaluation device for the synthesis and evaluation of complex small crystals under magnetic field conditions

technical field

The invention relates to a compound small crystal synthesis evaluation device under a magnetic field condition, belonging to the field of C30B single crystal growth.

Background technique

The research work on the synthesis, exploration, structural analysis and application evaluation of small complex crystals has dual meanings. On the one hand, it helps to further explore the relevant scientific laws. On the other hand, some new functional crystals with potential application prospects Materials are also expected to be revealed in the process.

The first thing to do in this type of research is to probe the synthesis conditions of new crystals, of which solvent evaporation at or near room temperature is usually prioritized because of its mildness.

Because there are many conditional factors that may affect the growth rate and crystal quality of small crystals of complexes, screening synthesis experiments are usually necessary. This type of screening experiments is generally carried out using many small beakers or test tubes at the same time. For parallel synthetic probes, the preference for small beakers or test tubes is dictated by the dose for this type of experiment and the solvent-evaporative synthetic means appropriate to that dose.

The above experiments generally only involve a small reaction volume of several milliliters to tens of milliliters of the filtered reaction solution. The general synthesis steps are as follows: first place the filtered reaction solutions prepared according to the design in different beakers or test tubes, and cover the mouth of each small beaker or test tube with a polyethylene film with some tiny holes, and then, Put each small beaker or test tube in a ventilated place in the room, the solvent in each small beaker or test tube volatilizes slowly through the tiny holes on each polyethylene coating, gradually reacts, concentrates, and then forms small crystals of related complexes. After that, the The obtained small crystals of the complex were used for further physical and chemical analysis and evaluation.

During the time-consuming and labor-intensive exploration process described above, the most exciting thing is to accidentally discover seedlings of complex crystal materials with potential value in electricity, light, sound, and magnetism. However, the designer of this case noticed that the actual In general, the chances of discovering potentially valuable complex crystal material seedlings are rare and rare, just like searching for a needle in the deep sea. The reason is that the experimental methods adopted by general scientific research laboratories in the above-mentioned synthetic exploration process are too extensive, and there is no introduction to help cultivate seedlings of complex crystal materials with potential value in electricity, light, sound, magnetism, etc. Additional auxiliary guiding factors, which make the search for target crystals inefficient.

Even small crystals of complexes with only a trace of specific performance in any aspects of electricity, light, sound, and magnetism are precious seedlings of crystal materials, and are scientific goals worth pursuing.

Contents of the invention

The technical problem to be solved by the present invention is to introduce additional auxiliary guiding factors, especially magnetic field guiding factors, in the screening synthetic experiment mode, and to develop a method for investigating and understanding the related reactions of small crystals of complexes under magnetic field conditions. It is an experimental device that can improve the efficiency of synthesis and exploration of related target crystals by evaluating related induction effects and growth laws.

The present invention solves the technical problem through the following scheme, which provides a synthesis and evaluation device for complex small crystals under magnetic field conditions. The device includes two stacked flat boxes, and the outline of the flat boxes is Round cake shape, there are many interfaces installed on the peripheral position of the flat box, the interface communicates with the inner cavity of the flat box, and many cups, the cavity of the bearing cavity of the cup The shape is cylindrical, the wall of the cup is a hollow wall, and the outer surface of the cup is equipped with a water inlet and a water outlet. The hollow wall of the cup is connected, and the water inlet and outlet of each cup are respectively connected with two interfaces respectively installed on different flat boxes, and the bottom of the cup is installed with permanent magnet. The bearing cavity of the cup is used for placing beakers or test tubes.

The permanent magnet can be any known permanent magnet, and the technical meaning of the permanent magnet is well known. Based on considerations such as price and performance, the permanent magnet can be preferably a hard ferrite permanent magnet or a neodymium iron boron permanent magnet. The technical meaning of hard ferrite permanent magnets and NdFeB permanent magnets is of course also well known.

The shape of the permanent magnet can be any shape, such as square, ring, U-shaped, plate-shaped, trapezoidal, bar-shaped, etc., and its installation mode can be any way, such as any number of permanent magnet rings of any shape can be placed Placed at the bottom side of the bearing cavity of the cup, any number of permanent magnets of any shape can also be stacked at the bottom of the bearing cavity of the cup, of course, it can also be placed in the cup at the same time Any number of permanent magnets of any shape are installed at the bottom side position of the bearing cavity of the cup and the bottom side position of the bearing cavity of the cup.

In order to form a compact and high-efficiency device structure, the permanent magnet can be preferably a flat plate-shaped permanent magnet, and the installation method suitable for the preferred flat plate-shaped permanent magnet is preferably that the permanent magnet is formed by a flat box-shaped The object is wrapped therein, and the structural position of the flat box is close to the bottom position of the bearing cavity of the cup. The structure of the flat box containing the flat permanent magnet is integrated with the bottom structure of the carrying chamber of the cup.

The size of the bearing cavity of the cup can be selected arbitrarily, and the size can be set according to the customary preference of each relevant scientific research institution. Because the container selected in this type of synthesis is a one-hundred-milliliter beaker in most cases, the preferred size of the holding chamber of the cup is the size that is compatible with the one-hundred-milliliter beaker, and the carrying capacity of the cup of this preferred size is The depth of the cavity is between 5.0 cm and 6.0 cm, and the diameter of the cylindrical cavity of the cavity-bearing cup of the preferred size is between 5.3 cm and 5.5 cm. Most of the one hundred milliliter beakers of common specifications are placed therein, the corresponding upper limit and corresponding lower limit of the depth dimension range of the bearing cavity of the cup-shaped object of the preferred size and the diameter dimension range of the cylindrical cavity As well as the corresponding intermediate values are desirable appropriate preferred size values.

The term "many" in the scheme means a larger number, such as ten, twenty, thirty, forty, fifty, sixty, etc. The device of this case can certainly also include some accessories, such as a super constant temperature tank, the water inlet and outlet interfaces of the super constant temperature tank can respectively communicate with two flat box-like objects stacked together, the technical meaning of the super constant temperature tank is well known Yes, the accessories may further include a filter installed on the constant temperature water circulation pipeline when necessary, and a valve for adjusting the flow rate installed on the constant temperature water circulation pipeline when necessary. In addition, the accessories naturally also include Any surface position of each flat box is provided with an interface for communicating with a super constant temperature bath.

The advantage of the present invention is that in the screening synthesis experiment mode, additional auxiliary guiding factors, especially magnetic field guiding factors, are introduced, utilizing the inherent resistance to the magnetic field of various reaction participation units such as ions, molecules and atoms. Response characteristics, applying a magnetic field to the reaction system from the outside, thereby guiding and strengthening the reaction tendency and crystallographic orientation that meet the goals of the corresponding synthesis experiment, which is roughly equivalent to using a magnetic field to establish a macroscopic template to induce the entire process to the desired direction. Direction evolution, the device in this case is used to investigate and understand the related reactions and growth laws of complex small crystals under magnetic field conditions, evaluate related induction effects, and improve the synthesis and search efficiency of related target crystals.

In addition, the core part of the device in this case can be used at room temperature or in combination with a super constant temperature bath; when used in conjunction with a super constant temperature bath, relevant magnetic field-induced screening synthesis experiments can be carried out under the condition of finely controlled temperature and relevant effect evaluation and other research and exploration work.

Description of drawings

Figure 1 is a schematic diagram of the embodiment of this case, which schematically describes the communication relationship between two flat boxes and the surrounding cups, and two additional bearing chambers schematically placed in the cups are added in the figure The beaker, in order to clearly understand the details of its key structure, the part of the structure is enlarged and displayed in the figure.

FIG. 2 is a schematic top view of the embodiment of the present case, which mainly schematically describes the structural outline of the device of the present case at a top view angle.

In the figure, 1 and 6 are two cups with different installation positions, 2, 5, 7 and 8 are four hoses with different installation positions, and 3 and 4 are two flat tubes stacked together. The box 9 is a flat plate-shaped permanent magnet covered by a flat box, and the flat box is integrated with the bottom structure of the bearing cavity of the cup.

Detailed ways

In the embodiment of this case shown in Figure 1, the structure of the device includes two flat boxes stacked together, which are respectively a flat box 3 and a flat box 4, and a flat box 3 and a flat box The profile of the shape object 4 is in the shape of a round cake, and there are many interfaces installed on the flat box shape object 3 and the peripheral positions of the flat box shape object 4 respectively. Or the inner cavity of the flat box 4 communicates, and many cups, in Fig. 1, only draw two cups with different installation positions, and the cups drawn in Fig. 1 are respectively cup-shaped Object 1 and cup 6, the structure of cup 1 and cup 6 is the same, the only difference is that the installation position is different, the shape of the cavity of the bearing cavity of each cup is cylindrical, and the shape of the cylindrical cup is The carrying chamber refers to the part of the cup that is used to hold the empty compartment. The wall of the cup is a hollow wall. The outer surface of the cup is equipped with a water inlet port and a water outlet port. Each cup The water inlet port and the water outlet port of each cup are connected with the hollow wall of the cup to which it belongs, and the water inlet port and the water outlet port of each cup are respectively connected with two ports respectively installed on different flat boxes. Unicom, in the example in Figure 1, the pipelines used to achieve the purpose of communication are four hoses 2, 5, 7, and 8 with different installation positions, and the number of hoses used for the same purpose in the actual device is far greater Here, the flexible pipe used for the same communication purpose can of course also be replaced by any other form of pipeline, such as rigid hard tube or hard tube group, etc., installed at the bottom of the cup. A permanent magnet 9 is provided. Permanent magnet 9 both available hard ferrite permanent magnet, also available NdFeB permanent magnet. In this example, the permanent magnet 9 is a flat plate-shaped permanent magnet of a preferred shape, and the permanent magnet 9 of this preferred shape is wrapped therein by a flat box, and the flat box and the cup of the permanent magnet 9 are covered. The bottoms of the carrying chambers are snugly connected together. The preferred depth of the load-bearing cavity of the cup is between 5.0 cm and 6.0 cm, the cylindrical cavity of the load-bearing cavity of the cup is preferably between 5.3 cm and 5.5 cm in diameter, and the corresponding upper part of each listed size range Limits, lower limits, and intermediate values, as well as other values in between, are available optional appropriate dimensional implementations. When used in conjunction with a super constant temperature tank, the water inlet and outlet interfaces of the super constant temperature tank can be respectively communicated with two flat boxes stacked together. The interface installed on the surface is used to connect to the super constant temperature bath. The device of this example shown in FIG. 2 has a radial profile in a top view, and this radial structure makes the constant-temperature water flow distribution through each cup-shaped object evenly distributed. In the case of being used in conjunction with a super constant temperature bath, by virtue of the fine temperature control with small fluctuations in the super constant temperature bath, a stable temperature environment can be provided for the crystal growth induced by a magnetic field. In this case, it can also be set in a water bath At any specified temperature point within the operable temperature range, a batch screening synthesis experiment of small crystals of complexes directed to the desired target induced by a highly stable growth temperature magnetic field is carried out, and the large-scale synthesis experiment supported by this device and its The subsequent timely physical and chemical evaluation is expected to gradually increase the understanding of the magnetic field effect.

Claims (1)

1. The evaluation device for the synthesis and evaluation of complex small crystals under magnetic field conditions, including two flat boxes stacked together. On the peripheral position, the interface communicates with the inner cavity of the flat box, and there are many cups, the cavity shape of the bearing chamber of the cup is cylindrical, and the wall of the cup is a hollow wall , the outer surface of the cup is equipped with a water inlet and a water outlet, and the water inlet and outlet of each cup are communicated with the hollow wall of the cup to which it belongs, and each cup’s The water inlet interface and the water outlet interface are respectively connected with two interfaces installed on different flat boxes, and a permanent magnet is installed at the bottom of the cup. The permanent magnet is a hard ferrite permanent magnet or neodymium. Iron-boron permanent magnet, the permanent magnet is in the shape of a flat plate, and the permanent magnet is covered by a flat box, the structural position of the flat box is close to the bottom position of the bearing cavity of the cup, and the cup-shaped The depth of the carrying cavity of the object is between 5.0 cm and 6.0 cm, and the diameter of the cylindrical cavity of the carrying cavity of the cup is between 5.3 cm and 5.5 cm.

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