ipl-logo

Tetrahedral Distortion Lab Report

1010 Words5 Pages

Tetrahedral distortion is defined as the change in both the distance of bond and angle of bond are present. The degree of distortion with respect to the beta phase can be related to the tetrahedral tilt angle and the intertetrahedral bridging angle. While for tetrahedral tilting, there is only change in the angle of the bond and no change in bond distance. When there is an increase in temperature, the Fe-O-P bridging angles increases and the tetrahedral tilt angles decreases. As the temperature increases from 294K to 1073K, Fe-O bond distance decreases and the bond tilt angle is also smaller. Whereas for PO4, the increase in temperature causes compression which cause the bond tilt angle to decrease. At high temperature which is the beta phase of FePO4, given that the increase in volume is only related to the changing of the angles between the tetrahedral (tilting angles), the structure should not be able to expand anymore and there would be no further change in volume. In beta phase of FePO4, the volume does not expand any further as the structure is fully expanded. In the beta phase of FePO4, the bond distance decreases as the temperature increases. The bond distance and angle also changes significantly with the temperature. For example, for Fe-O, the bond distance decrease from 1.75 to 1.73 from 1005K to 1073K. In the alpha phase of FePO4, …show more content…

With an increasing temperature, there would be an increase in volume and the tilt angle would decrease. By looking at the space group of alpha phase of FePO4 which is P3121, it shows that for low temperature form, there will be 3 one screw axis and for the space group of beta phase of FePO4 which is P6422, it shows that for high temperature form, there will be 6 four screw axis. This also explains the unit cell structure of alpha phase of FePO4 being trigonal and changing to hexagonal in the beta phase of

Show More
Related

Nt1310 Unit 3 Lab Report

1160 Words | 5 Pages

Ferrite is has a crystalline structure known as a Body Centered Cubic structure. Ferrite is a ceramic compound that has very little carbon causing it to be soft and ductile. Cementite is also a ceramic that has more carbon than ferrite. Quenching a metal is slightly different than annealing. When the steel is heated up, the steel is then rapidly cooled down is water or oil.

Read More

Unknown Solid Acid

1800 Words | 8 Pages

Purpose: The purpose of this lab is to titrate an unknown solid acid (KH2PO4) with a standardized sodium hydroxide solution. After recording and plotting the data, the acid’s equivalence point will be recorded once the color changes. Using the equivalence point, the halfway point will be calculated, which is used to determine the acid’s equilibrium constant. The acid’s calculated equilibrium constant will be compared with the acid’s established pKa value.

Read More

Hastings Point Lab Report

1610 Words | 7 Pages

Introduction For two days, on the 14th and 15th of April, a field excursion to Hastings Point, New South Wales was conducted. At Hastings Point, topography, abiotic factors and organism distribution were measured and recorded, with the aim of drawing links between the abiotic factors of two ecosystems (rocky shore and sand dunes), the organisms which live in them, and the adaptations they have developed to cope with these conditions. Within these two ecosystems, multiple zones were identified and recorded, and this report also aims to identify the factors and organisms associated with each zone. Lastly, using data and observations from the past, predictions for the future of the rock pool ecosystem were made.

Read More

Tetraphenylnaphthalene Lab Report

779 Words | 4 Pages

Benzyne Formation and the Diels-Alder Reaction Preparation of 1,2,3,4 Tetraphenylnaphthalene Aubree Edwards Purpose: 1,2,3,4-tetraphenylnaphthalene is prepared by first producing benzyne via the unstable diazonium salt. Then tetraphenylcyclopentadienone and benzyne undergo a diels-alder reaction to create 1,2,3,4-tetraphenylnaphthalene. Reactions: Procedure: The reaction mixture was created. Tetraphenylcyclopentadienone (0.1197g, 0.3113 mmol) a black solid powder, anthranilic acid ( 0.0482g, 0.3516 mmol) a yellowish sand, and 1,2-dimethoxyethane (1.2 ml) was added to a 5-ml conical vial.

Read More

Nt1310 Unit 4 Test Lab Report

462 Words | 2 Pages

III SYNTHESIS AND SIMULATIONS RESULTS The simulation and synthesis work is finally done by the xilinix and modelsim respectively. Figure 5:synthesis results of Fault FFT. The figures intimate the fault injected FFT,which is checked by the manual error injected via all diferent possibilities by using RTL scripting. Eventhough the soft error is added in the FFT the error detector code 100% detect the errors and corrector correct the errors.

Read More

Isopod Lab Report

1285 Words | 6 Pages

Introduction: Isopods are crustacean, which is split into smaller groups, called order. Scientifically Isopoda order is called isopods, which include pill bugs and sow bugs (Crustacean class). Most of the time isopods are mistaken for “bugs” since they look like insects.

Read More

Pt1420 Unit 6 Lab Report

407 Words | 2 Pages

• Write down the highlighted numbers. Do you observe a pattern? • Does the pattern grow? What is the reason for this? • Write down the last number (say 53).

Read More

Pt1420 Unit 6 Lab Report

155 Words | 1 Pages

Suppose you need to find the fractional European call and the fractional European put options. Let the Hurst parameter be $H=0.85$, the $\sigma=0,25$, $r=0.10$, $S_{fbm} = 100$, $K = 95$, we have \begin{eqnarray*} d_1^{fBm} & = & \frac{\ln{\frac{S}{K}} + \frac{1}{2}(r( T - t) + \frac{(1)\sigma^2{( T^{2H} - t^{2H})}}{2})}{\sigma{\sqrt{T^{2H} - t^{2H}}}}\\ & = & \frac{\ln(\frac{105}{100}) + (0.10(0.25 -0) + \frac{(1){0.25^2}{0.25^{2(0.85)} - (1)0.25^{2(0.85)}}}{2}}{(0.25){\sqrt{0.25^{2(0.85)} - 0}})} \end{eqnarray*} we obtain $d^{fBm}_1= 1.0558$. We find in the normal distribution that $N(1.0558)= 0.8544$ and $N(-1.0558) = 0.1456.$

Read More

Pt1420 Unit 3 Lab Report

485 Words | 2 Pages

Testing phase finds differences in positive/negative documents by the centroid obtained in training phase by ranking each of them. The simple way to estimate similarity between documents and centroid by summing weights of patterns which are in the documents. VII. Experimental Results To determine accurate measures of similarity or difference between documents you depict results by graph pattern and table pattern. The experimental setup consists of relevant documents that you termed as positive and negative documents .i.e

Read More

Lab Report Scaffold: Bromination Of Trans-Cinnamic Acid

904 Words | 4 Pages

It can be hypothesized that the water in the product affected the melting point

Read More

D2 Unit 8 Assignment

466 Words | 2 Pages

The identity operation, E, leaves the molecule unchanged. The C2 axis lies along the z-axis. The C2 operation transforms the dichloromethane molecule as so. Carrying out two consecutive C2 operations is equivalent to the identity transformation. There are two reflection planes in the molecule; both contain the rotation axis.

Read More

Pt1420 Unit 2 Lab Report

503 Words | 3 Pages

Discussion PV92 Gel Electrophoresis Results: Through the usage of gel electrophoresis the correct allele for each sample was able to be determined. Lanes one through three in the gel,were the positive control lanes they contained the PCR cocktail and a known high-quality template for the PCR reaction. First lane contained the sample with the +/+ allele, which had two copies of the ALU repeat allele. The first lane had a band at about 941 base pairs.

Read More

Summary Of Band Of Brothers By Stephen E. Ambrose

1104 Words | 5 Pages

The men of Easy Company, 506th Parachute Infantry Regiment, 101st Airborne Division, US Army, came from different backgrounds and different parts of the country. They were ordinary citizens, and over the years of 1942 to 1944 they were transformed into one of the world's most elite fighting forces, fighting across the front lines of World War II Europe including the Normandy Invasion, Operation Market Garden and the Battle of the Bulge. This story is captured in the book Band of Brothers by American historian Stephen E. Ambrose, as he bridges the link between these social backgrounds and the attitudes and behaviors of soldiers. Ambrose compiled his work with extensive research and interviews with the men of Easy Company. While the book is

Read More

Daphnia Experiment Lab Report

247 Words | 1 Pages

I tested Daphnias in a different environment with some high concentration of chemicals. The different environment experiment which included the ethanol, caffeine and spring water. Firstly, I used a transfer pipettes to grab a daphnia from its original habitat. Using a glass side on the microscope, I transferred the daphnia in the pipette to the glass slide. Adding 5% of ethanol to the slide enabled me to figure out how the Daphnia will act in that environment.

Read More

The Crucible Tituba Analysis

567 Words | 3 Pages

The Crucible, a novel that reflects on Salem's Witch Trials in early 1692. The strict religious culture set out by the Puritans ruled the village. Unexplained acts were seen as acts of the devil and witchcraft. Salem became caught up in a hysteria about witchcraft that year. The conflict ultimately claimed 19 lives.

Read More

More about Tetrahedral Distortion Lab Report

Related Topics

Open Document